Therapy for Suprascapular Nerve Entrapment - Palsy

Greetings,

I have severe weakness in my right arm, which was preceded by pain in my neck and shoulder blade but the pain has diminished. So, currently my chief complaint/symptom is severe weakness in my right arm (shoulder). I can't raise my arm, although there is feeling and no pain or burning etc. It just won't raise more than a few inches. I can use my hand and bend at the elbow, only the upper arm/shoulder is affected.

I've had an MRI and nerve function tests. The MRI stated I have a cyst that may be pressing on my suprascapular nerve and also some bone growth near the suprascapular notch. The nerve function test result was "severe nerve damage".

They have ordered more tests - chest x-ray, blood work, MRI with contrast, and a CT scan so I am not sure if the original MRI is correct or not. Maybe they are trying to verify? I have read and searched on google and my symptoms fit suprascapular nerve palsy exactly.

Anyways, I can't perform my job properly and this is dragging on into more than a month now. My doctors are doing a fine job but it just takes time to get all the appointments lined up and reports sent/reviewed etc. One of the things bothering me is I am not sure what I should be doing with my arm (shoulder). Resting it? Stretching it? Trying to exercise it? I don't want to cause damage to my rotator cuff or anything else but I also don't want my muscles to waste away.

Thanks for any help provided,
Roger