If your dragon is big, it's not gonna hurt to not feed bugs for a few days. Sometimes you just have to resist feeding bugs to get them to eat their greens. With adults, I've gone a week without feeding bugs, then down to every 3 days to get them back to eating greens. If they get hungry enough, they will eat the greens. You can also make the salads more appetizing by adding butternut squash and something colorful like bearded dragon bites or tiny bits of strawberries. The different colors seem to be more attractive and will get them to notice their salads.