Has he changed his technique? Will he be using different ingredients in the SGB "cocktail"? Have you been experiencing spread?

I think SGBs can be quite useful, but unless one of the above applies, then I don't think it would make sense to have additional SGBs performed by the same doc. Perhaps you should consider switching to an experienced RSD/CRPS doc with a good reputation? (Perhaps, yours is, but there are many pain docs that treat RSD and probably shouldn't be. It often means traveling to get to o
an expert...)