Is it normal for a baby to just stop wanting a specific bottle? I combo feed my 6 week old and the last 3 feedings he seemed to be sucking but he wasn’t actually drinking and he was getting upset . We mainly use Avent bottles and he’s never had an issue. I figured maybe he was actually full from the breast. I tried burping and he ended up falling asleep both times. Now this last time he got really upset and wouldn’t stop crying, so I poured the formula into a mam bottle that he’s used before and he drank it no problem. Now I feel horrible because he was likely hungry both those times. Do babies do this with bottles? I only have 2 mam ones, so should I buy more? Or is it possible he’ll drink from the Avent again? Idn I never had this issue with my daughter.