My DD also used to fluff like a trooper!! She doesn't now that she's older, but when she was about 4-8wks, she used to fluff in her sleep alot. Sometimes loud enough to wake me LOL! She also used to poo 2 or sometimes 3 times a day in the earlier days.
I used to give her gripe water or brauers colic relief which both seemed to work.I was told be careful with giving your bub water if they are bf as sometimes it sometimes makes them take less milk, don't give them too much water. I also used to do exercises with her legs (bicycles) and gently massage her tummy in a clockwise direction throught the day to try to help move the gas