How much does he take during the night? Does he eat before the 4-5 am feed? I would suggest you cut out the night feeding which will allow him to take more during the day. I started giving my ds 8 oz. bottles at about 10 WO and decided he did not need to eat at night. We had about a week of him still waking at night because he was used to it, but I did not feed, found other ways to settle him and then he took more at each daytime bottle. He also began taking more at the dreamfeed. If he is getting a lot of his oz. during the night, it would make since that he doesn't want more than 3-5 oz. at every other bottle. The goal is to get the calories in during the day, so maybe think about cutting night feedings. Does he use a pacifier... that helped us at that stage... we also did wake to sleep to change his intenal clock, which seemed to be used to waking at a certain time for sleep. We were lucky, he didn't put up too much of a fight and I haven't fed him at night since.