Good to meet you, "Smiling"
I don't think that "total zero" is ever really possible, but with the right pain management and finding a good treatment combination, you may get your pain down to a more tolerable level on occasion. Sometimes, not always, people will find the RSD goes in cycles of high-and-low pain.
I personally think that my tolerance for pain has changed over the years as well. Minor bumps, cuts, scrapes, etc. that some people find hurtful will be almost like a tickle to me. I guess that, relative to the RSD pain, it is so minor it’s not even worth saying “ouch.”
Hope you get some relief soon.
Mike