Unusual sleeping pattern?? or normal??

Is this normal??? My five month old will sleep perfectly for a week, that is, from 9-6 with no bottle, sleep the whole night through. then the next week he wakes up every 4 hours for a feed. Does anyone have any suggestions?


Also, when should babies drop their night feed/bottle?

Sounds like a growth spurt does he finish all his bottles? If so might need to up the amount you give.