Quoting Mary Stickles:" My son was born at 33 weeks he is fourth months old next week. he has reflux BAD..is on meds and Enfamil ... [snip!] ... him...but is it really when he can not keep it down. so my question is do I still breastfeed or switch to formula full time?"
Keep breastfeeding because it is much better for babies in general.
I would however try cutting out dairy for a week or two and see if that helps. He could have an intolerance to the lactose.Oh and if you drink coffee try cutting that out if the dairy doesn't seem to do much. It can cause AR because the caffeine leaks into the milk.
One other thing, breastmilk is lighter then formula so they do tend to spit more of it up but that is a good thing in a sense because it is a lot less corrosive to their throat and a lot less painful coming back up. If your babe is gaining weight, do not worry about it to much. I would stop giving formula all together and see if cutting dairy helps. My son had AR and multiple pediatricians and my friends told me breast is best when it comes to this. It also has so many other benefits. It isn't worth giving up mama. Hope this helps! <3