I've only had that problem a couple times, one of the times bumping up the humidity took care of it, the other time he made it past his second shed and still had stuck eye caps. When I have really bad sheds that I can't fix by bumping up the humidity, I put the snake in a plastic tub with warm water and a hand towel for about 15 minutes. Then run the hand towel down the snake head to tail and that should take care of the problem. If not, soak the snake for another 15 minutes.