so im wondering what else red eyed tree frogs can eat aside from crickets?

Then id have to of course do a test and see if frenchy actually WILL eat any other than crickets, lol, he seems to be very particular

"no crickets... NO EATING!" he thinks! lol

Ive tried flies, he wouldnt eat them... Maybe he didnt see them or they were too fast?
Ive tried wax worms... He paid no attention even when they were wiggling in the bowl
Now im thinking to try meal worms. Not to be mistaken with superworms, which id not risk, considering their strong mandibles.

Question is, can red eyes eat meal worms even? has anyone tried before?