My young Leatherback bearded dragon may be sick. He's about 6.5 inches long, and I just got him in February. He seemed to be doing fine until about a week ago. He's shed twice, he's been eating and drinking, and basking. But about a week ago, he started to not do anything. He hasn't eaten, drank(that I've seen), or even been basking. He just sits there with his eyes closed. Is he okay? Thank you very much for your help