Since you have caught it somewhat early, another thing you might want to look into is a high dose infusion of bisphosphonates. There is a thread further down talking about a study with several high dose infusions of the bisphosphonate neridronate that showed very promising results. Also, you may want to look into graded motor imagery/mirror box therapy. Again, these therapies might work better if initiated shortly after the development of CRPS. Furthermore, I'd take vitamin c and possibly NAC to address free radicals and inflammation.

These things (with the exception of the high dose bisphosphonates which we never tried) have helped my fiancee anyway, who is basically in remission now from CRPS.