Is he just a terrible hunter?

Hi friends, my younger White's tree frog is having an awful time catching crickets. He jumps for them but always comes up way short. If I leave crickets in his terrarium they never get eaten so I take him out and feed him in a seperate box. When he was a little guy I took him out to feed him and hand fed him some but he never seemed to have trouble catching his own food until now. Could he have a brain injury, is he sick, or is he just a terrible hunter. He goes for the food but doesn't quite get there. He seems to have much less troublw with waxies and meallworms that are more stationary. However I don't want his diet to bee too much of that. Is there a worm that can be fed as a regular diet? Tomato horn worms or something? Nightcrawlers? Or is he just spoiled by hand feeding when he was young? My other Whites eats and catches everything. They are not in the same cagem Any advice is welcome?