Help with gas for newborn

My dd is 3.5w and I've discovered that dairy in my diet is the likely culprit in causing her painful gas. I read that it can take 3w for the dairy protein to be out if my milk.. What can I do to expedite it getting out of my milk and to help relieve her gas? I've done massage and bicycle motions but it seems to be of little help, and of course burping. Gas drops makes me nervous bc she is still so young and small (7.5lbs). She poos before/ and sometimes after each feeding (a ton!) and screams when she does bc of all the wind that comes with it.