Well you can have a fecal done at the vet. As far as the salads, you really need to be offering salads every day. Just leave the salads in the viv and eventually he will eat them. You can look up some tricks on here to help him eat them. As far as only eating a few crickets at a time that is fine, just offer them a bunch of times. They should be eating breakfast, lunch, dinner at that age. It is not good to leave live crix in the viv but you could try killing a couple and leaving them on top of the salad. You can also try supplementing the diet with baby food. Squash, apple bluberry are great just make sure that there are not additives. The label should say squash and water. Also you can try feeding chicken baby food, it is hard to find, but I just discovered chicken apple baby food and Scorch loves it.