We had to use them for the first time a few weeks ago when Reese was really gassy, & they did seem to help a bit.
What ended up happening with BFing for you? Was the LC able to help with your milk coming in? If she is really gassy, it could be that she is having trouble digesting her formula, or if you are BFing, it could be something in your diet that is irritating her as well. If you're using formula, maybe you could ask your pedi how long he recommends waiting before trying something new. If you're BFing, maybe try avoiding dairy for a week to see if you notice improvement. I hope she feels better soon!