A two-week-old baby typically eats 2 to 3 ounces per feeding, roughly 8 to 12 times in a 24-hour period. That works out to somewhere between 16 and 24 total ounces per day, though the exact amount varies from baby to baby. Whether you’re breastfeeding, formula feeding, or doing a combination, the general pattern at this age is small, frequent meals driven by your baby’s hunger cues.
Formula Feeding Amounts at Two Weeks
Most formula-fed newborns start their first days of life taking just 1 to 2 ounces per feeding. By two weeks, that amount climbs to about 2 to 3 ounces every 2 to 3 hours. A helpful rule of thumb: babies need roughly 2.5 ounces of formula per day for every pound of body weight. So a baby who weighs 8 pounds would need about 20 ounces spread across the day.
At this age, expect 8 to 12 feedings in 24 hours. That schedule can feel relentless, especially overnight, but it matches the size of your baby’s stomach. By day 10, a newborn’s stomach is about the size of a ping-pong ball, holding roughly 2 ounces at a time. Larger feedings spaced further apart will come naturally over the next few weeks as the stomach grows and your baby can take in more at once.
Breastfeeding Frequency and Duration
Breastfed babies also feed 8 to 12 times per day at two weeks. Because breast milk digests faster than formula, breastfed newborns sometimes land on the higher end of that range. Each nursing session typically lasts 10 to 20 minutes per breast, though some babies are efficient feeders who finish faster and others prefer to take their time.
With breastfeeding, you can’t measure ounces the way you can with a bottle, which is one reason parents worry about whether their baby is getting enough. The best indicators aren’t volume but output and growth (more on that below). Your baby should seem satisfied after most feedings, with periods of calm alertness between sessions rather than constant fussiness.
The Two-Week Growth Spurt
Two weeks is one of the earliest common growth spurt windows. During a growth spurt, your baby may suddenly want to eat more often, seem fussier than usual, and sleep differently. A baby who had settled into feeding every 2.5 to 3 hours might suddenly want to eat every hour or cluster several feedings together in the evening. This is normal and temporary. Growth spurts in young babies tend to last up to about three days before feeding patterns settle back down.
If you’re breastfeeding, this increased demand actually helps build your milk supply. The more frequently your baby nurses, the more milk your body produces. Supplementing with formula during a growth spurt isn’t necessary unless there’s a medical reason. For formula-fed babies, you can offer an extra half-ounce or ounce per bottle rather than rigidly sticking to a set amount.
Hunger and Fullness Cues to Watch For
Feeding a two-week-old works best when you follow their cues rather than a strict clock. Babies signal hunger before they start crying. Early hunger signs include putting hands to their mouth, turning their head toward your breast or a bottle (called rooting), and smacking or licking their lips. Clenched fists are another subtle signal. Crying is actually a late hunger cue, and a very upset baby can have a harder time latching or settling into a feeding.
Fullness cues are just as important. When your baby closes their mouth, turns their head away from the breast or bottle, or relaxes their hands, they’re telling you they’ve had enough. Resist the urge to push them to finish the last half-ounce in a bottle. Babies are good at self-regulating their intake at this age, and forcing extra milk can lead to uncomfortable spit-up.
How to Tell Your Baby Is Eating Enough
The most reliable day-to-day sign is diaper output. After the first five days of life, a well-fed newborn produces at least six wet diapers per day. Poopy diapers will vary, but breastfed babies at this age often have several a day, while formula-fed babies may go a bit less frequently.
Weight gain is the other key measure. Healthy newborns gain about 1 ounce per day in the early months, which adds up to roughly 5 to 7 ounces per week. Most babies lose some weight in the first few days after birth and are expected to return to their birth weight by about 10 to 14 days old. Your pediatrician will check this at early well-visits, so you don’t need a home scale to track it yourself.
What Not to Give a Two-Week-Old
Babies under six months get everything they need from breast milk or formula. Water, juice, cereal, and any other foods or liquids are unnecessary and potentially harmful at this age. Even small amounts of water can interfere with a newborn’s electrolyte balance and fill up their tiny stomach, causing them to take in less of the nutrition they actually need. The only thing that should go in a bottle is breast milk or formula unless your pediatrician has specifically directed otherwise.