My DD2, who is 6 weeks on Sunday, has woken up the last few mornings around 5/6am with very bad trumpy wind. She thrashes around for a while, does some enourmous farts, and then once they're out (sometimes can be up to an hour of fussing) then she immediately falls asleep.
She's feeding between 3 and 4am so I know she's not hungry - would something like infacol or colief help?
She's FF btw, using Dr Brown's bottles and aptamil.