I have a male veiled chameleon that has been acting strange for he past 10 days. he is about 2 years old, has been fed, crickets, mealworms, and wax worms. Just the other day he would not use one back leg. He will use it but doesn't. The grip in that foot is low but has some grip. After that he was sleeping on the bottom of his cage. He will eat but is not shooting his tongue out anymore, we have to place food in his mouth. He appears weak, and I don't think he has gotten enough calcium powder. One eye looks sunken in to his face. Any help with be greatly appreciated.