When it's older and capable of eating larger foods, that should be alright, but crickets drown very easily. The moss could cause impaction, as Luke said. For now, especially when it's young and can't aim it's tongue with great ease, you should probably put it in another clean container, slightly smaller than it's current enclosure, and watch it eat, so you know exactly how much it eats. Don't worry if it doesn't eat right away, it may still be using nutrients from it's absorbed tail.