They shed when they need to depending on growth patterns and the wearing out of their old skin. As long as your humidity is fine, your snake will do just fine I'm sure. I've watched some of ours just ripple their muscles and roll that shed down like a nylon stocking. We had one at last weeks feeding that came out to get her dinner, shed half rolled down. Gulped down dinner then went back to rolling off her shed. She's a very efficient sort of snake LOL.