He's not necessarily healthy if you've noticed he's losing weight. He could be just chubby and have lost some weight because he had more space to move, just keep an eye on it like you already are. And I just re read your first post and didn't see a single answer to the questions I asked. If you meant one of your first threads, well, I'm working off the information posted in this thread.

Fyi, I was a dog trainer also, worked with one of the top trainers in the country, doesn't mean I knew jack about frogs when I got my first one.