I just set-up like this with my pixie frog, though I'm new to the frog thing but I feed him in a separate cage and then soak him in water for a few until he uses the bathroom then back in his cage to reduce waste build up and prevent bedding/plant ingestion. Will update how this works out in another thread along with pics but I don't see why this method wouldn't work since the plants can be removed when cleaning and they are less likely to be damaged by the frog and its waste