My baby is having thumb sucking habit.she does it most of the time. Many times I try to distract her by offering toys or blocks but her focus is only on sucking her thumb finger. I tried with mittens too.. but no use.. im really worried about how to stop her from this habit. is it a bad habit? should I worry for it? I know babies do thumb sucking to soothe themselves but still I want my baby to break the habit