@tug25 I hope you do realize that the side effects of being on prednisone and coming off prednisone are different for everyone. Unfortunately, there is no way to know or predict how any one person will react.
What you need to watch for as you taper down is that the lower dose is no longer covering the pain and you are having some symptoms return. That is the key. Then you need to concern yourself with the symptoms of adrenal insufficiency since they are easily confused with PMR pain.