Hello I bought 2 amazon milk frogs at the KC reptile expo and one died so I have been trying soooo hard to keep my other one alive, it is about 1/2 long and all he does it stick to the glass every time I ever see him. How do I know if he is eating there are fruitflies and 3 crickets in his terrarium and I haven't seen the frog move much. How Do I know?