Baby wants feeding all the time!?


I have a 2 month old (9weeks tomorrow) and he is in 6oz and he is draining the bottle everytime! He wants it every 2 hours but I am stretching it to 3 hours and just trying to put up with the fussing for an hour :/ surely 6oz every 2 hours is way too much! he is quite a big boy (14lb-15lb) what do you suggest I do? :/