As @elizaann2 mentioned silk or hornworms would be a big help. I highly recommend running a fogger at night at they actually breathe in the fog helping with her hydration.
I see a few things I would change with the enclosure, it looks way to small (dimensions ?) 24x24x48 is a minimum size. add a lot more foliage towards the top. How much and often are you feeding him ?
Another vet visit might be needed. Here's one of mine just to give you some ideas on how much...
Welcome to the forums, Jonathan is one of the best and a sponsor here and good luck on your project 👍
I would probably put the enclosure on a stand of some sort to raise it to where the basking branch is roughly eye level or so.