I took the advice of never reducing by more than 10% at a time from my current dosage. For me, 5mg was the sticking point. I had been tapering at the rate of .5mg every 10-11 days, but 4.5mg was uncomfortable (sore arms) and 4mg worse (VERY sore arms). At that point I returned to 5mg for one day, then starting tapering by .25mg using a pill splitter. Relief was pretty much instant. By the time I finished, I was dividing 1mg pills into four and 5mg pills into eight - the math got interesting. I had also stopped having any reaction to tapers, and at some point changed over to a week rather than 10 days.

I've been off Prednisone for eight weeks. To be honest, I don't feel exactly as I did prior to getting PMR a year ago, but I'm fully functional and most discomfort can be shrugged off as maybe-age-related.