At night times my 12 weeks old infant will not wake up to breast feed, 5 hours gap ll b there for last breastfeed. any problem to baby's nutition?

Not if baby is fine: We (doctors, moms, dads, neighbors, etc.) all want babies to sleep through the night by the time they are 3 months old. Parents with babies who sleep through the night are lucky parents. As long as a baby is growing fine on his measurements at the check-ups, and is healthy, parents don't need to wake up a sleeping baby at night.