I have a veiled chameleon and he's about 2 months old. He is very small. Even smaller than my thumb. At the store, they told me to get a box of crickets and feed him 5 crickets a day, but he did not eat all of them. In the beginning, I noticed that some of the crickets were bigger than his head which is probably why he didn't eat much, but now I only feed him small crickets and he only eats about 1 or 2 a day. What do I do?