Let me encourage you to keep with the physical therapy. A frozen shoulder is no fun, and if you don't work at regaining range of motion, you will lose it forever ( or have to go through really excruciating pain to "unfreeze" it.)

My MIL never did the exercises...and she lost use of that arm practically.

You can do this!

IDK about gaining so much weight from a shoulder surgery, unless it is the pain med. Or unless all you did for exercise was play golf?

Keep that body movin!