Hey girls. I'm still breastfeeding but he also takes formula afterward because he's not full on me. We're having trouble with the nipple flow being too fast on all bottles we've tried. He has reflux so he chokes a lot anyway. We've tried munchkin latch, avent natural, Dr. brown, playtex ventaire, nuk, and now currently using Tommee tippee. Anyone have any other suggestions for bottles with a slower flow. I guess with him breastfeeding exclusively that he works harder, then applies the same suck on a bottle and that is too fast? I think that's the problem, not positive though. And yes, every nipple I have tried has been size 1.