When can babies sleep through the night in general?

After age 3 months: Newborns sleep 8-9 daytime hours & 8-9 nighttime hours awakening every 3-4 hours to eat. Babies begin sleeping through the night (6-8 hours) at age 3 months.

Prevention of sleep: Problems can begin at 1 month by establishing a consistent bedtime & routine that ends in putting baby in his own crib , drowsy but awake. A consolidated 6-hour sleep can happen by 3-4 mos. If infant self-regulates falling asleep. 50% of 5-mo.-olds sleep 6-8 hours. Night-waking/feeding become learned behaviors @ 6 mos. If reinforced. Erupting teeth can decay; wipe out baby's mouth after last sip.