Welcome @tinmanneedsoil, Sorry to hear you joined the PMR club. It can be tricky tapering down on prednisone. Slower the better most of the time and some doctors don't get that part. My Mayo rheumatologist told me that I need to listen to my body when it comes to tapering my prednisone dose. Have been in remission for over six years now from my second round with PMR.

It sounds like you were recently diagnosed 3 weeks or so ago. If that's the case you are way early in the game of tapering. We are all different when it comes to PMR pain and tapering but I think the average length of time for getting off of prednisone with PMR is 2 to 5 years. My first time took 3 and half years, second time took 1 and half years to taper off. You might want to read check out the following discussion to learn what others have shared.
--- PMR Dosages and Managing Symptoms: https://connect.mayoclinic.org/discussion/pmr-dosages/

May I ask how long ago you were diagnosed with PMR and started treatment?