My daughter has sucked her thumb since birth. she has recently turned 4, nowadays she just sucks her thumb at night.(rarely during the day) To stop her from doing it i have tried positive reinforcement, rewards, offering a cuddle toy but none of this has helped. I feel she knows she isnt meant to do it as she says ‘im not going to suck my thumb’ but this habit has persisted. i would love to hear any advice as to how i can help/encourage her to stop! Thanks All!