If your frog continues not eating you might eventually want to try getting a poop sample from him checked out, that is if you can find an exotic vet that sees frogs. My small White's has been very energetic even when not eating for a few weeks at the time. It turned out he had parasites and since that's (hopefully) been taken care of, his appetite has improved though he's still small and clumsy.

Your frog sounds adorable.