Question: how do you know how much a baby should eat?
Answer: The amount your formula-fed baby eats will depend on his weight, age and appetite (which can vary from one day to the next, just like yours does). As a rule of thumb, infants under 6 months who haven't yet started solids will take in 2 to 2 1/2 ounces of formula per pound of body weight within a 24-hour period.