A 2-week-old baby typically eats 1.5 to 3 ounces per feeding, roughly 8 to 12 times in a 24-hour period. The exact amount depends on whether your baby is breastfed or formula-fed, how fast they’re growing, and their individual appetite. At this age, their stomach is about the size of a ping-pong ball, holding around 2 ounces at a time.
Formula-Fed Babies at Two Weeks
If your baby drinks formula exclusively, a good starting point is 1 to 2 ounces every 2 to 3 hours. By two weeks, many formula-fed babies are closer to 2 to 3 ounces per feeding as they settle into a rhythm. That works out to roughly 16 to 24 ounces over a full day, though some babies fall slightly outside that range.
Formula digests more slowly than breast milk, so formula-fed babies sometimes go a bit longer between feedings. Even so, expect to feed your newborn at least 8 times in 24 hours. If your baby consistently drains the bottle and still seems hungry, it’s fine to offer an extra half ounce. If they regularly leave formula behind, scale back slightly. Let your baby guide you rather than fixating on hitting an exact number.
Breastfed Babies at Two Weeks
With breastfeeding, you can’t measure ounces directly, and that’s completely normal. Instead of tracking volume, focus on frequency: most breastfed newborns eat every 2 to 4 hours, for a total of 8 to 12 sessions per day. Some feedings will be short and others longer, and the spacing between them won’t always be even.
Breast milk composition changes throughout a feeding, with fattier milk arriving later in the session. Letting your baby finish one breast before offering the other helps ensure they get those higher-calorie portions. A feeding that lasts 10 to 20 minutes per side is typical, but some babies are efficient eaters who finish faster.
The 2-Week Growth Spurt
Right around 2 to 3 weeks, most babies hit their first major growth spurt. During these few days, your baby may want to eat as often as every 30 minutes, seem fussier than usual, and act unsatisfied after feedings that were previously enough. This is called cluster feeding, and it’s temporary.
Growth spurts usually last only a few days. For breastfeeding parents, the increased demand actually signals your body to produce more milk, so the best response is simply to feed on demand. For formula-fed babies, you can offer a little extra at each feeding. Once the spurt passes, your baby will likely settle back into a more predictable pattern, often eating slightly more per session than before.
How to Tell Your Baby Is Getting Enough
Since you can’t peer inside your baby’s stomach, diapers are the most reliable daily indicator. By two weeks, a well-fed baby produces 5 to 6 wet diapers and 3 to 4 or more dirty diapers every 24 hours. The stools should be soft and yellowish (for breastfed babies) or tan to yellow-green (for formula-fed babies), each roughly the size of a quarter or larger.
Weight gain is the other key measure. Most newborns lose some weight in the first few days of life but regain their birth weight by around 10 to 14 days. After that, a gain of about 5 to 7 ounces per week is typical. Your pediatrician will track this at well-baby visits, so those early checkups matter.
Hunger and Fullness Cues
Crying is actually a late sign of hunger. By the time your baby is wailing, they’ve already been signaling for a while. Early hunger cues at this age include putting hands to their mouth, turning their head toward your breast or the bottle (called rooting), smacking or licking their lips, and clenching their fists. Catching these signals early makes feedings calmer for everyone.
Fullness looks different. A satisfied baby will close their mouth, turn their head away from the breast or bottle, and relax their hands. Their body visibly loosens. If your baby shows these signs partway through a bottle, don’t push them to finish. Forcing extra ounces can override the natural hunger regulation newborns are born with.
Night Feedings at This Age
At two weeks, your baby’s stomach is still too small to hold enough calories to sleep for long stretches. Most newborns wake every 2 to 4 hours overnight, and some cluster feed in the late evening before a slightly longer sleep window of 4 to 5 hours. This is biologically normal, not a sign that something is wrong or that your milk supply is low.
If your baby sleeps longer than 4 to 5 hours at a stretch and hasn’t yet regained their birth weight, your pediatrician may recommend waking them to eat. Once they’re back to birth weight and gaining steadily, you can generally let them sleep until they wake on their own.
Common Reasons a Baby Eats Less or More
Some variation from feeding to feeding is completely normal. A baby who ate 3 ounces at one session might only take 1.5 ounces two hours later. What matters is the overall pattern across 24 hours, not any single feeding.
Consistently eating very little (under 1 ounce per feeding, for example) or refusing to eat can signal issues like a tongue tie, reflux, or illness. On the other end, a baby who seems ravenous constantly, never settles after feeding, and isn’t gaining weight may not be transferring milk effectively during breastfeeding. Both situations are worth mentioning to your pediatrician, especially if diaper counts drop below 5 wet diapers a day or your baby seems unusually sleepy and hard to wake for feedings.