By the end of the first month, a baby will be up to at least 3 to 4 ounces (120 mL) per feeding, on a predictable schedule of feedings about every 3 to 4 hours

. On average, a newborn drinks about 1.5–3 ounces (45–90 milliliters) every 2–3 hours

. General guidelines for how much formula a 1-month-old should eat:

• Offer 2–3 ounces (60–90 mL) of formula every 2–3 hours

• Around 4 ounces every 4 hours

• Most newborns will feed 8 to 12 times in 24 hours

• Between 3–8 weeks, a baby may eat 3–5 ounces (90–150 mL) 5–8 times in 24 hours

• A healthy baby from 5 days to 3 months will need about 150 ml of prepared formula per kilogram of body weight each day

The amount of formula a baby needs will vary, so it is important to pay attention to their hunger cues and adjust the amount accordingly

. A baby who is full may suck with less enthusiasm, stop, or turn away from the bottle