My son is almost 8weeks old n he is alreadi drinking 150ml but doesnt seem to b enuf for him... 150ml every 3hrs but now starting to want milk less then 3hrs... he is about 60cm plus n 5kg plus... doc say he is the size of an average 3mnth old... i even tried giving him water to delay his feeding time but no use... any advice? worried that he will become obese...