3 week old feeding and sleep ???

Brittany

My little man is a Chunk , he eats 4oz almost each time. but he is also a good sleeper. he Will sleep over 3 hours and I have been setting am alarm on my phone for every 4. everyone I know doctor has a diffrent answer about how ling to let them sleep.? if he's getting enough food would you wake your baby up ( and after how many hours). Would 5 be too many ???w