Hello, are you only trying crickets at the moment? I asked because when I had my female Cranwelli she always took crickets as a baby, and then once she was about 2 inches she refused them and went to nightcrawlers. It didn't matter how much I tried she would not take them, she would turn from them or she would take it from the tongs in her lips then open her mouth and let them fall out. Drop a nightcrawler in front of her and it was gone before u could blink. Maybe try switching your feeders to something bigger and maybe he will eat, its worth a try. Also I don't how much truth there is to this but I once was told from the guy here at the reptile store that if the meal being presented doesn't seem big enough to waste the energy on they will wait for a bigger prey item to come strolling buy. He said it was part of the natural predator instinct and that many predator animals will do the same in the wild.