You don't need the reptaboost if he is eating. If he doesn't eat for you on the days of shedding, you can put the cricket or night crawler piece in his mouth when he opens wide. Night crawlers are softer, easier to digest, and more nutritious than crickets, so they are a great choice if he'll take them. Odd that you see no poo if he's eating. How often is he taking food for you?