There are guidelines. See image for UK NICE guidelines. But Note; these are under review. Here’s a link to EU guidelines. https://ard.eular.org/article/S0003-4967(26)00357-2/fulltext
But there’s also a lot of research around the high %age of people who ‘fail’ during tapering. My experience with GP Nutritionist and Pharmacist is that tapering needs to be personalised. And run in parallel with changes - nutrition, activity, sleep, lifestyle - to eradicate the underlying inflammatory/autoimmune problems that provoked the onset of PMR. Otherwise the chances of tapering failure and/or return of PMR seem quite high. Lots of great online info on Inflammation and PMR, Diet and PMR. Cytokine production and PMR. Healing the HPA Axis and PMR. It’s the endocrine background to PMR.
Happy to share my tapering schedule but it is my personalised schedule.
Good Luck!