You can give him grated butternut squash as part of his regular meal. It has a lot of vitamin A, or beta-carotene, or is it both...? The vitamin A and beta-carotene is necessary healthy skin, which will help in shedding. Not only that it has carbohydrate, which gives him a lot of energy, and fiber which makes him go to the bathroom on a regular basis. Nice job by the way! Keep it up!