That's huge! Any particular rational why? Just went through that, or agreed to try, and it was horrible. Was on 60mg prednisone for 1 month following a diagnosis of GCA. Had been down to 2mg after 6 years of yoyo dosing due to flares. My rheumatologist wasn't convinced I had GCA (negative biopsy) and I was having disturbing side effects so he dropped me from 60 to 40mg with no taper. Lasted 2 days, at which point all I could do was sit in a chair and shake. GCA symptoms came back so I bumped back up and walked down 5mg a week until I hit 30mg and stopped there (his goal being 20mg). That was still too fast, but my BP was out of control. Pay attention to your body. Best of luck.