I co-sleep with my babies in the young months and nurse on demand around the clock. Baby's grunting and rooting is all it takes. However, sometimes the really sleepy newborn will need to be woken up to eat. I admit that my oldest would go four hours, but, generally-speaking, breastfed newborns need to eat every 2-3hrs. Their tummies are tiny and empty fast. They shouldn't go all night without eating too young. That's not normally a problem though since they tend to be rather good at letting ya know. HTH!

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