Breastfeeding Twins: Setting Up Supply for Two
Breastfeeding twins works on the same rule as breastfeeding one baby, only doubled: milk supply follows demand, so the first weeks are about frequent, effective feeds for both babies. In practice that means feeding each twin around 8 to 12 times in 24 hours, deciding feed by feed whether to nurse them together or one at a time, and tracking each twin’s wet diapers and weight separately. If a twin is in the NICU or cannot latch yet, regular expressing keeps your supply going until they can. Get an IBCLC involved early, ideally one who has worked with twins.
This page covers the first weeks of getting breastfeeding going for two. Positions and pillow setup are in tandem breastfeeding twins. If you are still choosing between breast, bottle, pumping and combination feeding, start with feeding twins: every method compared.
Supply follows demand, times two
UMass Memorial Health’s breastfeeding twins sheet puts it in one line: “The more you nurse, the more milk your body makes.” It also notes that “any amount of breast milk that you can give your babies is important”, which is worth remembering on a hard day.
What counts as frequent, per baby:
- About 8 to 12 feeds in 24 hours. The CDC’s page on how much and how often to breastfeed says “your baby will breastfeed about 8 to 12 times in 24 hours.” The UMass sheet says that in the beginning babies feed “at least 8 times in a 24-hour period” and may cluster feed every 1 to 2 hours at times.
- On demand, and both sides. The NHS page is my baby getting enough milk? says to “feed your baby as often as they want and for as long as they want.” It also says to offer both breasts at each feed and alternate which one you start with. With twins, the side-swapping job is about which twin gets which breast; more on that below.
Multiply it out: two babies on 8 to 12 feeds each is 16 to 24 feeds a day. That number is why twin parents feed together and sync schedules.
Together or one at a time: a per-feed choice
One at a time is easier to learn on. The UMass sheet notes that some mothers start this way “until they and their babies have had some practice”. It gives each baby one-on-one time, but “it will also take you much longer, and you are less likely to get some rest.” It is where you work on a latch that is not right yet.
Together is what makes the day add up once both latches work. It needs a twin nursing pillow such as the My Brest Friend Twins, and in the early days a second adult to hand you each baby. The UMass sheet says to latch them on one at a time. The AAP notes in feeding twins on a schedule that after a C-section you may need to wait “a week or so” before using a twin pillow, because its front edge crosses the healing incision. Choosing a pillow is covered in twin nursing pillows.
Syncing them is the step that turns 16 to 24 separate feeds into fewer, longer sessions. The AAP’s golden rule for twins is that “when one wakes up to eat, both must wake up to eat.” The UMass sheet says the same, adding that “you are not harming your baby by waking them.”
Which twin gets which side
Twins rarely feed the same way. The UMass sheet notes that one may nurse “more quickly or aggressively than the other,” and that one breast may make more milk or let down more strongly. Two practical rules follow from that:
- Swap sides between feeds. The AAP says each twin gets their own side and to “alternate who gets which side with each feeding.” That way each breast gets both feeding styles.
- Back up the slower feeder. If one twin is feeding well and the other is not, the UMass sheet suggests pumping the breast the slower twin was on once they stop. Another adult can then give that milk by bottle so that baby gets a little more. A double electric pump like the Spectra S1 Plus earns its place here.
When a twin cannot breastfeed yet
Twins are more likely to be born early, and the first feeds may not happen at the breast. Northern Ireland’s Southern Health Trust, in its page on breastfeeding twins and triplets, notes that very small or premature babies “can find it difficult to breastfeed at the beginning.” It adds that “if you are unable to feed your babies straight away it doesn’t mean that you won’t be able to breastfeed.” It recommends skin-to-skin time and “expressing breastmilk regularly” to help.
The UMass sheet goes further for twins in the NICU: start pumping “with a hospital-grade double breast pump as soon as you can after delivery.” Ask the unit about one on day one. The NICU team and its lactation staff decide the feeding plan for a preterm twin, not this page.
Is each twin getting enough?
The signs are per baby, so track them per baby.
| Sign (from the NHS page) | What to log for each twin |
|---|---|
| ”At least 6 heavy, wet nappies every 24 hours” from day 5 (only 2 or 3 in the first 48 hours) | Wet diapers per twin, per day |
| ”At least 2 soft, yellow poos” a day from day 4, for the first few weeks | Dirty diapers per twin, per day |
| Steady weight gain after the first 3 to 4 days | Each twin’s weights from every check, side by side |
| Content and satisfied after most feeds | Which twin, which side, how long |
The UMass sheet makes the same point for twins specifically: keep track of “how many wet and dirty diapers each baby has over 24 hours” and bring the chart to the babies’ doctor visits. Its call-the-doctor list includes a baby more than 5 days old with fewer than 5 wet diapers in 24 hours, so its threshold is one diaper lower than the NHS figure. Either way, a twin falling short gets a call the same day. The A|B twin feeding and sleep log has one column per baby for exactly this.
When to call an IBCLC
Book one in the first week or two, before anything is wrong. The UMass sheet recommends a lactation consultant “who has experience with multiples.” The NHS lists common reasons supply runs low. These include time away from your baby after the birth, “for example, because they were premature,” and formula or a dummy before breastfeeding is established. It adds: “if you have concerns about how much milk your baby is getting, it’s important to ask for help early.” Call sooner for:
- pain during feeds that does not ease after the first few sucks;
- one twin consistently falling short on diapers or weight;
- feeds that, in the UMass sheet’s words, last “less than 10 minutes or more than 40 minutes”;
- signs of breast inflammation or infection, such as pain, swelling, warmth, redness or a fever. That is also a call to your own doctor.
Look after the one doing the feeding
The UMass sheet estimates you need “about 450 to 500 extra calories for each baby, each day” while breastfeeding twins, plus plenty of water. Once supply is established, a partner can take one overnight feed with pumped milk, though you may still need to wake to drain your breasts to prevent engorgement.
FAQ: breastfeeding twins
Can you exclusively breastfeed twins?
Many parents do. Supply follows demand, so two babies feeding often can build supply for two. Early IBCLC help and per-twin tracking make it more likely to work.
Should I breastfeed twins at the same time or separately?
Both are fine, and most families use both: one at a time while learning a latch, together once both twins latch well.
How do I know each twin is getting enough breast milk?
Track each twin separately. From day 5 the NHS expects at least 6 heavy wet diapers in 24 hours, plus steady weight gain after the first few days. If one twin falls short, call your pediatrician or IBCLC that day.
Do twins always feed from the same breast?
No. The AAP suggests alternating which twin gets which side at each feed, so each breast gets both babies’ feeding styles.
