Shoulder pain

So according to my doctor I I am C4 complete because that's the remaining function I have my injury destroy my C-5 C6 and C7 vertebrae's. I have limited shoulder function, full bicep function and wrist extension. However my right shoulder is much worse and I can't even pronate my right so any wrist activation just flops it over. My left arm functions better I can pronate and use the wrist extension for minor things, how over my left shoulder is often overused and fatigues by the end of the day becomes quite painful. I drive an electric wheelchair down low,, and I have moved my controls to the right side sometime ago to try to train my right arm no success. I can't really explain how bad the right shoulder is, I'll try my best so you can have an idea maybe suggest some help. I can put my left arm straight in front of me at shoulder height get any higher careful of the hand will fly out back to me because of no triceps, Right is the same however I can't even fully straighten the elbow and I cannot pronate before also add feels as if the shoulder joint is not properly stabilized and in the actual joint properly. If I curl my arms and grab around my elbow to do a triceps shoulders stretch this relieving for my left, but for my right it feels as though I am pulling it out of the joint. If I have someone assist me with lifting my arms straight up towards the ceiling again relieving for my left , Feels like i'm pulling the joint apart on my right. If I put both arms down to the side and try and push my shoulder blades back it is relieving but my right arm and right shoulder blade can not pull nearly as far back And my right rhomboid seizes up every time I try. In terms of doing physiotherapy the right is obviously Hindering substantially in fact, it makes utilizing a manual chair even on flat indoor ground, very impractical and harmful on the joint. Know by the end of the day every day my left arm just from using my iPad eating ( because I can't keep The right forearm pronated I cannot eat with the right even with a feeding cuff ) aches and aches bad in the rear deltoid rhomboids and sharp shooting pain in the traps. Right arm can only drive me so far before becoming extremely fatigued, and it aches 24/7 even when in bed. The right arm can't even use my iPad efficiently, now I use voice recognition for most of this, but when it screws up I have to use my left knuckle so getting that even the small paragraph it was quite painful? What can I do, as this is all I have would strengthening them with wrist weights help, when I tried this in the past it just seems to hurt the right shoulder joint,electrical stem something I should try? There's not a lot I can do is obvious shoulder problems and pains limit th electrical stem something I should try? There's not a lot I can do but these obvious shoulder problems and pains limit me even with the tasks I can be doing.

I have address this with physio therapist and doctors, obviously the injury is worse on my right side and I have less function, it's not something that can be rehabilitated to equal out unfortunately

Shoulder pain