Congrats on your new little guy - do you know how old he is? Having him in a very large screen cage and free ranging crickets may not be the best ide at his size. If any are left in the cage overnight they might nibble on your little cham if they do not have access to other food, you can leave some dry gutload/and or a pice of carrot or something for any that are left in the cage. He also might not be able to find them in a large cage (just how large?) I assume you have plants in there with him - have you seen him eat all these crickets? They can hide really well - in soil, in and around pots, etc. Babies can dehydrate quicker than adults and you may have a hard time keeping the humidity up in screen for now - depends where you live. You can keep them in a glass tank to help with humidity until about 3 months. I linked below to a good baby article (scroll down to 5 weeks to 4 months section) and there are also good ones at www.chameleonnews.com
You might consider bowl feeding so you can really gauge how much he is consuming. What size crickets? They should not be longer than his head is wide.
Can we see pics??? I love baby photos 
lele
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Chameleon Help & Resource Info
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