I got Puff about 3 weeks ago. The pet store told me he 8 weeks old. He was about 6 inches when we got him and now he's about 7.5 to 8 inches but he only weighs about 10 grams. I think something is wrong... He's about to shed his back. He shed his head and tail the second week we had him. He typically eats 20 crickets a day and poos every day, sometimes more than once. I'm not sure he's as old as they told me was. I'm just worried about him.