My LO varies between 6-8 bottles. Sometimes he will only last 3 hours between feeds, sometimes 3.5, sometimes 4 hours. He has 100mls every bottle, so just over 3oz. The only reason I'm worried he's having too much is because he weighed 2.8kg (6.2lbs) when he was born and had shot up to 3.5kg (7.11lbs) by the time he was 19 days old. 6 days later when he was three and a half weeks he was 7.14lbs. Is this weight gain too fast? I'm worried we are over feeding him. I know weight gain is good, but surely there is a point where it's too much too fast?