Glad you are able to taper. These same thing happened to me. 5 years with PMR with a few flare ups but nothing prednisone couldn't handle. I had the first shot of the Moderna vaccine and was fine for a few days then PMR came back with a vengeance. My Dr. had me double the 2.5 mg to 5 and start the taper again. It seems like for
me 1.5 to 2 is the magic number. I'm back to 3 but have problems with my hands especially with trigger finger on 2 fingers. Now that the booster is here I might just stay at 3mgs until after I get the booster. Stay the course and it will pass.