Hi Zoe, thanks for responding..
to be honest I really doubt it's the nipple size at issue. We're on the largest Avent size anyway and when he puts his mind to it he can down 6 oz in about a minute. In addition, when I say he takes 1 oz - sometimes he sees the bottle coming, seams his lips together and glares at me. I wiggle the nipple into his mouth somehow, he gets milk on his lips - and the rage starts. The morning he hadn't had so much as a sip before he was yelling.
Stacy: yeah, he's just not hungry. And if I push, he lets me know about it in no uncertain terms. Sometimes if I try again about half an hour later he'll very grudgingly take an oz, but no more than that. How old was your Kaleb when this one started? We have dropped dream feed a few times but DS started waking hungry at 3, so I started doing it again.