Question: when will a premature baby catch up?
Answer: The earlier an infant arrives, the longer she may need to catch up -- but most do get there, Bear says. A baby born at 36 weeks may not be caught up at 6 months, but may be at within the normal range by 12 months. A baby born at 26 weeks or less may not catch up until they're 2-and-a-half or 3 years old.