Welcome : )
This section is fine for your question.
Just a quick FYI, the site owner will likely contact you soon to pick out another screenname. “BB” is actually the name she goes by here on the forum, so it could get confusing with 2 BB’s!
So does Rhett choose go into his cage and back out again during his free range time? He manages getting in and out when it’s his choice? Is there a little ramp?
It’s a pity the food lure is no longer working for you. Maybe you will have luck again with a treat he values more?
You could try getting him to hop into some sort of box or basket then carry him it that over to the cage door. Even use a litter tray. It’s something that worked well for my rabbit who was very much a “no touchies” bunny when I adopted him. Picking up was a no no. His previous owner had made a little hidey box that when he place it down in front of the bun, he would hop into that, and then the owner was able to pick it up and take bun in the box back to his enclosure. It was something that worked well for me when I first brought him home and was learning the do’s and don’ts with him.