My son Is 8 weeks and all of a sudden won't drink his bottles anymore. We've been on the same formula since birth absolutely nothing has changed, he's just become fussy all of a sudden! He was on 6oz from 6 and half weeks and always drank the full bottle every feed. He has his bottles every four hours and would always wake on time for them or always show signs of hunger leading up to them. He now shows signs of hunger but doesn't really wake up for them, when I feed him his bottle he has one ounce fine, then burps etc and refuses to drink anymore. He'll fuss and mess with the teat and I'll eventually get another 2 oz into him and then he'll have no interest at all in anymore. I'll wait half an hour and try again... still no interest. I don't understand how all of a sudden he could loose his interest in his bottles. The only one I seem to be able to get into him is his last one before bed. I will be asking the doctor about it, but I just was wondering is this fairly common in babies this young? He is showing no signs of colic etc and seems to be just as happy as usual, Just being super fussy all of a sudden. Any advice will help!! Thanks :)