If your husbandry was right put everything back the way it was then don't mess with him for a week or two, then try again. as far as the actual eating goes, they eat when they want to. If he is not loosing weight, there is nothing to worry about. You cannot stress yourself out about balls not eating. When he becomes an adult he is going to go off food for a period of months. I've had boys go six months without eating. Their biology is set up to eat for periods then fast for periods. This probably has something to do with food availability in the wild.