My young ball python is 5 months old and started to shed about 10 days ago but only his head had shed and nothing else until yesterday...I am concerned because it is all coming off in pieces small and large, but there are still some large pieces of skin on his back that don't seem to want to come off. I don't know what I am supposed to do. I saw one person on a reptile show peel off a rat snake's dry skin but don't know if I am supposed to help him by doing that or what. Any help would be welcome!