hi all. wondered whether teat size a baby needs is impacted by whether he's still bfing. ds (6 months) is bf apart from bedtime feed. i still use a size 2 avent teat for the bottle feed but noticed that other babies his age are using much faster flowing ones. he has been a bit fussy during his bottle feed the last few nights and i wondered if he may be getting frustrated with rate of flow. but then surely boob flow remains constant, and he doesn't get frustrated with his breast feeds...?