Your newborn's stomach is small. That's why many experts recommend feeding "on demand". At first, your newborn may breastfeed every 2-3 hours, or 8-12 times in a 24-hour period. If your newborn sleeps more than 3 hours between feedings, ask your baby's doctor about waking her to nurse. She needs the nourishment, and your breasts need the stimulation to continue to produce milk. By the way, the 4 hour schedule should arrive as your baby gets a little older.