What are you feeding him and how often? It sounds like you might not be feeding him enough. I got a BP mid July and she's shed 3 times since I got her, granted she shed shortly after I got her and just had her most recent shed yesterday. Babies tend to shed fairly frequently.
Edit: How often they shed is pretty much tied to how they are fed not how they are kept. Husbandry comes in to play with how well they shed.