Not yet but found an interesting article
https://www.parkinson.org/library/fact-sheets/pain

Pain in Parkinson's Disease

https://www.parkinson.org/library/fact-sheets/pain

"Core training can help Parkinson's patients improve their balance by strengthening the muscles that support the spine and pelvis, which are essential for maintaining posture and stability. Core training can also improve your mobility and function by enhancing your movement quality, range of motion, and coordination"
https://www.youtube.com/watch?v=1_fjzYto7QY

My pain is in my spine, I have been unable to move without crippling pain

Thanks 😊

It appears that low back pain is quite common in Parkinson's and this video is on an exercise that may help a little - https://www.youtube.com/watch?v=mzHFxbpB7gE