if both sides are affected, you have to
a) sleep on your back with something which ensures that you don't compress both scapulae against the rib cage
b) relieve the pressure from the inside, I can not emphasize enough how much easier life is, if one is breathing properly.
c) sacrifice one side so that at least one side might improve (this would be a last resort

during the 7 years that i have had TOS my situation has varied enormously. i have had the other side worsen because i have been sleeping on it almost exclusively, luckily it never deteriorated to any where near as bad as my affected side. it would come good during the course of the day. people who are normal (not TOS) are able to change their sleeping position often and therefore not allow any compression of nerves that occurs to be significant. If one is restricted in the positions that one can sleep it will not allow the compressions to be shared and therefore focus compression onto a new and previously unaffected area. maybe this is the reason that some people develop bi lateral TOS (combined with the breathing). there is a condition called saturday night palsy which i have seen to describe the reason for 1)long thoracic nerve palsy or 2)brachial plexus compromise. Saturday night palsy is when persons are so intoxicated that they become comatosed and lie in one position only, thereby compressing nerves to the point where they are significantly damaged. the more restricted we become in our sleeping positions or, if we take medicine that knocks us out or masks pain we are more likely to cause compromise to the vulnerable nerves, this is the big trap.

every small improvement should be celebrated, if you can achieve enough momentum the results will lift your spirits such that efforts to improve no longer are perceived as efforts. you will appreciate being able to do some of the things that you previously took for granted. my hobby was cabinetmaking, i was reasonably skilled at it, not being able to create removed an important piece of my "psyche". i can now do many things that i had lost the ability to do.

good luck

towelhorse