This really could be over-active let-down showing itself in a slightly different way. I think it's very common for babies dealing with heavy flow to pull off a lot as if to say " hey let me catch my breath here". Is mom feeding from both breasts at each feeding? Since the baby is really gaining well, you could try the standard --feed from only one breast per feeding --let some of the heaviest MER, usually the first, spray into a towel instead of babies mouth --reposition so that baby is higher than the breast--have mom lay back in a recliner or on pillows and then put baby on top. Gravity can help him get some control over the force of the milk. If this is over-active let-down, babies dealing with this can sometimes get pretty ticked off and start fighting more if things don't get a little easier for them. I think it is also common for these babies to be "gassy" because they can swallow a lot of air with that heavy MER and are sometimes having to deal with lots of foremilk. (and that gets into that whole lactose digesting enzyme thing which I don't have tons of knowledge about) Hope this may be helpful Kim PA-C, CLE in P.A. where it finally rained and is getting cooler