The time between shed varies because it depends on how fast your bp grows. I usually get sheds every 1-1.5 months. Clean the shed? What does it have on it? When I had loose substrate, I would just pick it off. I usually just hang mine up. If you would like it to look nice lay it on something flat and get all the wrinkles out...because they are hard to get out once it dries. Nope not weird...I keep old sheds too