A two-week-old baby typically drinks 2 to 3 ounces of milk per feeding, eating 8 to 12 times over a 24-hour period. That adds up to roughly 16 to 24 ounces total per day, though the exact amount varies from baby to baby. Whether you’re breastfeeding, formula feeding, or doing a combination of both, the best guide isn’t a precise number on a chart. It’s your baby’s hunger cues and growth pattern.
How Much Per Feeding at Two Weeks
In the first few days of life, a newborn’s stomach is tiny, roughly the size of a cherry. By two weeks, it has stretched considerably, but it’s still small. Most formula-fed babies at this age take about 2 to 3 ounces per feeding. Some hungrier babies may take closer to 4 ounces on occasion, especially during a growth spurt, while smaller or sleepier babies might take closer to 1.5 to 2 ounces and eat more frequently to compensate.
If you’re breastfeeding, you can’t measure ounces directly at the breast, and that’s perfectly fine. Breastfed babies regulate their own intake by nursing for varying lengths of time. Total breast milk intake by the second week typically falls between about 17 and 24 ounces per day, spread across frequent feedings.
How Often to Feed
At two weeks, expect to feed your baby every 2 to 3 hours, including overnight. That works out to 8 to 12 feedings in 24 hours. Breastfed babies tend to eat on the higher end of that range because breast milk digests faster than formula. Formula-fed babies may go slightly longer between feedings, closer to every 3 hours, but many still eat every 2 to 2.5 hours at this age.
Count the time between feedings from the start of one feeding to the start of the next, not from when the baby finishes. A feeding that begins at 1:00 PM and takes 20 minutes means the next feeding would start around 3:00 PM, not 3:20.
The Two-Week Growth Spurt
Two weeks is one of the most common times for a growth spurt. These typically last a few days and can make your baby seem suddenly, insatiably hungry. During a growth spurt, babies may want to eat as often as every 30 minutes, especially in the evening. They may also be fussier than usual between feedings.
This is normal and temporary. If you’re breastfeeding, the increased demand signals your body to produce more milk, so feeding on demand during these days is important. If you’re formula feeding, offer an extra ounce at each feeding when your baby still seems hungry after finishing a bottle. Within a few days, your baby will settle back into a more predictable pattern.
Hunger and Fullness Cues to Watch For
Rather than watching the clock or measuring ounces precisely, the most reliable strategy is responsive feeding: offering milk when your baby shows hunger and stopping when they show they’ve had enough. At two weeks, hunger looks like this:
- Bringing hands to mouth or sucking on fists
- Turning toward the breast or bottle (called rooting)
- Smacking or licking lips
- Clenching fists
Crying is actually a late hunger sign. If you can catch those earlier cues, feeding will go more smoothly because a calm baby latches and swallows more easily than a frantic one.
When your baby is full, they’ll close their mouth, turn their head away from the breast or bottle, and visibly relax their hands. Don’t push a baby to finish a bottle if they’re showing these signs. Overfeeding can cause discomfort and excess spit-up.
How to Tell Your Baby Is Getting Enough
The amount your baby drinks matters less than whether they’re growing well and staying hydrated. At two weeks, you should see at least 6 wet diapers per day. The number of dirty diapers varies more widely, but most babies at this age are still having several per day, especially breastfed babies.
Weight gain is the most reliable indicator. Most newborns lose some weight in the first few days after birth and are expected to regain their birth weight by about two weeks. After that, healthy weight gain is roughly 1 ounce per day, or about 5 to 7 ounces per week. Your pediatrician will track this at well-baby visits, but if you’re concerned between appointments, many pediatric offices will let you come in for a quick weight check.
Breastfed vs. Formula-Fed Differences
Breast milk and formula are digested at different rates, which affects feeding patterns. Breast milk passes through a baby’s stomach faster, so breastfed newborns tend to eat more frequently. This doesn’t mean they’re not getting enough. It’s simply how breast milk works.
One practical difference: breastfed babies need a daily vitamin D supplement of 400 IU, starting in the first few days of life. Most infant formula is already fortified with vitamin D, so formula-fed babies who drink at least about 32 ounces daily don’t need the supplement. At two weeks, though, no baby is drinking that much, so your pediatrician may recommend vitamin D drops regardless of feeding method.
If you’re pumping and bottle-feeding breast milk, the same 2 to 3 ounce guideline per feeding applies. Pumped milk volumes give you a useful window into what your baby actually takes, which can be reassuring if you’ve been worried about supply.
Signs Something May Be Off
Most two-week-olds eat well if given the chance, but a few patterns are worth paying attention to. Fewer than 6 wet diapers a day, dark yellow urine, or a baby who is consistently too sleepy to eat (fewer than 8 feedings in 24 hours) can signal dehydration or inadequate intake. A baby who seems hungry immediately after every full feeding and isn’t gaining weight may not be transferring milk effectively at the breast.
On the other end, forceful vomiting after most feedings (not just normal spit-up), refusing to eat, or a baby who seems to be in pain while feeding can point to issues like reflux or a milk protein sensitivity. Any of these warrant a call to your pediatrician rather than a wait-and-see approach, since two-week-olds have very little margin for nutritional shortfalls.