Moving from breast to bottle or cup: a step-by-step guide

6-12 months · Feeding · Reviewed 20 June 2026 · All articles

Breastfeeding is more than just nourishment. It is warmth, closeness, and a private language between you and your baby. So when the time comes to move on to a bottle or a cup, it can feel surprisingly emotional, even if the decision is entirely your own choice. Whether you are returning to work, winding down feeds gradually at your own pace, or following your baby's lead, this article walks you through every stage of the transition, from knowing when to start, to managing supply changes, to supporting both yourself and your baby through what can be a tender but very manageable change.

There is no single right way to wean from the breast, and there is no single right time. What matters most is that the process is gradual, responsive, and kind to you both.

When is the right time to begin the transition?

The World Health Organization recommends exclusive breastfeeding for the first six months, followed by continued breastfeeding alongside solid foods for at least two years. The American Academy of Pediatrics (AAP) similarly supports breastfeeding for at least the first year and as long as both mother and baby wish after that. These guidelines are not a timetable for weaning; they are simply reminders that breast milk keeps offering benefits well beyond infancy.

In practice, most families begin reducing or replacing breastfeeds somewhere between six and twelve months, often for one of these reasons:

Whatever the reason, gradual is almost always better than sudden. Dropping one feed every several days to a week gives your body time to adjust milk production without causing engorgement or mastitis, and gives your baby time to adapt emotionally and practically.

If your baby is under six months, speak to a health visitor, midwife, or lactation consultant before beginning any weaning process, as they can guide you on the safest approach for your situation.

Moving from breast to bottle: a step-by-step approach

Bottles are a common choice for babies under twelve months who still need large volumes of expressed breast milk or formula. Here is a practical sequence that tends to work well:

Step 1: Choose the right time to introduce the bottle

Aim for a moment when your baby is calm and only mildly hungry, not in a state of urgent need. A frantically hungry baby will struggle to accept anything new. Some families find mid-morning works well, after the first breastfeed of the day has taken the edge off. Others prefer a mid-afternoon feed when the baby is relaxed and alert.

Step 2: Try having someone else offer the first bottle

This is one of the most consistent tips from lactation consultants. The breastfeeding parent carries a strong scent-memory for the baby, who associates that person entirely with the breast. When someone else (a partner, a grandparent, a nursery worker) offers the bottle, the baby does not have the same expectation to override. If you need to be present, try turning away or leaving the room once the bottle is offered.

Step 3: Experiment with teats

There is no universally "best" bottle teat, but slow-flow teats that require some active sucking tend to suit breastfed babies better than fast-flow ones. Wide, rounded teats that mimic the shape of the breast are often marketed as "breastfeeding-friendly" and may ease the transition. If your baby rejects one shape or brand after several tries, simply try another.

Step 4: Offer expressed breast milk in the bottle first

If you are able to express, filling the first few bottles with your own milk removes one variable. The taste is familiar even if the delivery method is not. Once your baby is comfortable with the bottle itself, you can introduce formula if needed.

Step 5: Replace feeds one at a time

Begin by replacing the feed that matters least to your baby, usually a mid-morning or mid-afternoon feed rather than the first morning feed or the bedtime feed. Maintain those emotionally important breastfeeds for as long as feels right for both of you. Over several weeks, you can replace feeds one by one until you reach the number you want, or phase out breastfeeding entirely.

Step 6: Keep the experience warm

Hold your baby close during bottle feeds. Make eye contact, talk softly, and pace the feed so it takes roughly as long as a breastfeed would. Paced bottle feeding, where you hold the bottle more horizontally and pause to let the baby control the flow, prevents your baby from gulping and mirrors the natural rhythm of the breast.

Introducing an open cup or sippy cup

The AAP recommends introducing a cup around six months, alongside the start of solid foods, and suggests moving fully to an open cup by twelve months. This is earlier than many parents expect, but the rationale is sound: long-term bottle use after twelve months is associated with tooth decay (especially when bottles are used at sleep time with milk), and may delay the oral-motor development that supports speech.

Open cup vs. sippy cup

The AAP's current guidance favours open cups over sippy cups for a specific reason. Most spill-proof sippy cups use a valve that requires the baby to create suction, almost identical to the mechanics of bottle feeding. This means the baby gains little practice with the swallowing pattern required for drinking from a real cup. A free-flowing spouted cup (without a valve) is a reasonable middle step, but an open cup is the preferred long-term goal.

To introduce an open cup:

Most babies become reasonably proficient with an open cup by around nine to twelve months, though every child's timeline is different. Consistent daily practice matters more than speed.

Managing your milk supply during the transition

Your breasts produce milk on a supply-and-demand basis. When feeds are removed gradually, your body receives a clear signal to reduce production over time. When feeds are removed suddenly, the signal is too abrupt and engorgement, blocked ducts, or mastitis can follow.

Here are the key principles for managing supply during weaning:

Drop one feed at a time, slowly

Allow three to seven days between dropping each feed. Some women find they need a full week; others can move more quickly. Follow your body's cues. If your breasts feel uncomfortably full before you are ready to drop the next feed, wait a few more days.

Express only for comfort, not to empty

If you feel very full, hand-express or pump just enough to relieve pressure without fully emptying. Fully emptying the breast tells your body to produce more milk. The goal during weaning is to leave milk in the breast, which signals production to slow down.

Manage discomfort

Cold compresses or chilled cabbage leaves (a long-standing home remedy with some anecdotal evidence) can ease the feeling of fullness. A well-fitted, firm bra provides gentle support. Avoid tight binding, which can increase the risk of blocked ducts.

Watch for mastitis

Mastitis is an inflammation of breast tissue, sometimes with bacterial infection. Signs include a hot, red, hard area of the breast, flu-like symptoms, and fever. If you develop these symptoms, contact your health visitor, midwife, or GP promptly. Mastitis can usually be treated with antibiotics if caught early. Continue to remove milk from the affected breast (either by feeding, hand expressing, or pumping) to prevent a worsening blockage.

Expect an emotional dimension to supply changes

Weaning involves hormonal shifts, including a drop in prolactin and oxytocin. Some women feel a temporary low mood or sadness during or after weaning, sometimes called post-weaning depression. This is not weakness; it is a physiological response. If it persists for more than a few weeks or feels severe, speak to your GP.

The emotional side: for you and your baby

It is worth naming this directly: weaning can be sad. Even if you have been ready for months, even if you feel certain the decision is right, the end of breastfeeding can carry a grief that takes people by surprise. You are closing a chapter that is entirely unique to your relationship with this child. That deserves acknowledgement.

For your baby, feeds are not only about hunger. They are also about comfort, connection, and security. Your baby may initially seek the breast more when stressed, unwell, or overtired, even if they are accepting a bottle or cup at calmer moments. This is normal. Weaning does not mean withdrawing closeness. You can replace the skin-to-skin contact and calm of a feed with extra cuddle time, skin contact during bottle or cup feeds, and responsive settling in other ways.

It is also entirely normal to feel relief. Breastfeeding can be physically demanding, and many mothers feel a sense of bodily autonomy returning as they wean. Both sadness and relief are valid, and they often coexist.

If your baby is going through a difficult developmental period (separation anxiety typically peaks around nine to twelve months), consider pausing or slowing the transition until they are more settled. Weaning does not need to happen on a rigid schedule.

Frequently asked questions

What is the best age to start transitioning away from breastfeeding?

There is no single right age. The World Health Organization recommends breastfeeding alongside solid foods for at least two years, but the AAP also supports continued breastfeeding as long as both mother and baby wish. Most families begin reducing feeds somewhere between 6 and 12 months, often prompted by returning to work or following their baby's natural lead. The key is to drop feeds gradually, one at a time, over several weeks rather than stopping all at once.

My baby refuses the bottle entirely. What can I try?

Bottle refusal is very common in babies who have only ever fed at the breast. Try having someone other than the breastfeeding parent offer the bottle, since the baby associates you with the breast. Offer the bottle when the baby is calm and only a little hungry, not urgently crying. Experiment with different teat shapes and flow rates. Warming the teat slightly, holding the baby in a different position, or offering the bottle as part of play can all help. If refusal continues and your baby is over six months, you can move straight to an open cup and skip the bottle entirely.

Should I use a sippy cup or an open cup?

The AAP recommends introducing an open cup around six months and moving fully to an open cup by twelve months. Sippy cups with a spill-proof valve require the same sucking motion as a bottle and can delay the oral-motor skills needed for speech and swallowing. A free-flowing spouted cup (one without a valve) is a reasonable stepping stone, but an open cup is the AAP's preferred choice. Start with just a small amount of water or expressed milk in a shallow cup and let your baby explore at their own pace.

How do I manage engorgement and protect my milk supply during the transition?

When you drop a feed, your body needs time to adjust. Replacing one feed every few days to one week gives your supply time to naturally decrease without causing painful engorgement. If your breasts feel very full, hand-express or pump just enough milk to feel comfortable, not to empty completely, as full emptying signals the body to make more. Cold compresses, a well-fitting supportive bra, and anti-inflammatory pain relief (if appropriate for you) can ease discomfort. If you develop a blocked duct or symptoms of mastitis such as a hard red patch or fever, contact your midwife, health visitor, or doctor promptly.

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