It's hard to say that there is a "typical" recovery time. My TOS is derived from a combo of RSI and chronic muscle tension, and I'm still dealing with it, although it has improved and some symptoms like forearm numbness are gone while others are greatly decreased.
You will want to investigate:
-- break intervals
-- brugger relief pose
-- caffeine reduction
-- magnesium increase
-- research/reading which you are obviously doing
-- armaid product
-- intelliskin product
You may not need all of that. You will have to figure out what you do need.
For me personally, I had to fix more than just my arms or neck. I had to improve my body. Good places to start for that are the books "3 Minutes..." by Weisberg and "Pain Free at the PC" by Egoscue.
I recommend you carve out time in the morning for the stretches. I recommend hydrating first, eg, down a glass of water.
And then some time in the evening for a few more stretches plus research.
As a daily habit.
You might also find this site interesting:
HTH. Good luck.