As long as you're feeding your snake the proper size prey as often as neccedsary and the husbandry is up to par then I'm sure he's on the proper shed schedule. Give it time and keep feeding him every week the proper food and wait it out. No need to rush a shed, plenty other things that could go wrong and so long as that's your biggest concern I would say you're good! Every snake is different, you're may just shed less than the next :-)
If it were me I would just double chck my husbandry and feeding habits to ensure proper care.