Thumb sucking advice...... GO!!!!

Heather
My daughter has been sucking her thumb and in the past two months she's been doing it A LOT more. I asked her doc about it and he kind of ignored it. He didn't give me a direct answer if it was ok to let her for a few more months or to nip it in the bud now. Any advice from mommies who let them self soothe and their experiences would be great!!