So I have had a young Jerusalem cricket for about two months now it seems to be doing well. I'm concerned because the only thing that I have seen him take for food is grapes. I have offered many fruit, veggies, dog food, cat food, fish food, and live insects but it seems to have no interest in anything but grapes. He has molted once in the time I have had him and seems to be doing fine other then eating dose anyone have any advice?