Thank you all so much for your replies.

The prednisone has been effective in keeping the swelling away in my foot/ankle. And I'm starting to favor my foot less and less and walk more normally. Pain comes and goes but seems to have diminished a little more. I am a bit worried though what will happen once I complete the month of prednisone I'm on.

I have been going into the gym doing the exercise bike and calf exercises in moderation--which seems to be helping me a great deal to desensitize my foot and re-establish strength in my leg I had lost over the past few months from favoring it so much.

Most annoying thing for me right now is this constant calf muscle twitching which seems to happen when my leg is at rest.

BTW. My doctor does advertise himself as an RSDS specialist and it comforts me to see he has various articles published on the subject.

Once again, thank you all so much for the info you have provided. I will post back ... hopefully with progress.