I agree with PakRacMG that it could be something you're eating. my dd2 is a reflux bub and I've had to cut out a lot of things from my diet(garlic onions broccoli caffeine chocolate to name a few etc) and it has made a huge difference. she still chucks but not as much however having said that I should also mention that she has been on Losec for the last week which is also helping!

also BB milk is a lot thinner than formula so comes back up much more easily. are you able to express and use a thickener in the expressed milk? I did this as well as modifying my diet and it also seems to have helped

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