my son is 2 year 3 month old, he got thumb sucking habit..we almost got success in getting rid of this habit by constantly talking to him...but his sleep cycle has reduced.usually he sleeps in for 2-3 hours in afternoon and 8-9 hours at night but after talking about his thumb sucking habit and telling how his habit leads to teeth alignment , his afternoon sleep cycle reduced to 0 and in nights he is waking up whenever he gets the urge to thumb sucking....how to approach this?