Since we're doing medication changes as well, I said I wanted to wait until the meds were settled before starting any sort of physical therapy. I also have some concerns about my heart, due to my high resting heart rate, and I want to make sure anything I do physically is safe for me.
However, I did think of something that I could do in the meantime - or rather, that could be done to me. My husband often offers me massages to help with the pain, but it occurred to me that a different sort of bodywork might help with the pain as well as help condition the muscles. So about a week or two ago, he started moving my legs for me. Rotate the ankle around, raise the leg, bend the knee, and so on. Basically the same sort of movements I'd do myself as part of a warmup for a traditional exercise routine, but in this case, he's supplying most of the energy to do the work.
I think it's been good for me, and at least doesn't seem to increase my fatigue any. He's done just a bit with my shoulders and arms, but since my shoulders remain my weakest joint, he doesn't do them every day.
I think the name for this is "facilitated stretching". I'll be telling Dr Purple Hair about it at my next appointment (likely in January) and we'll see if it can be incorporated into the exercise plans that she'll be recommending.