I think the one you are thinking about may be in the following discussion:
-- Any Tips For Tapering Off Prednisone?: https://connect.mayoclinic.org/discussion/any-tips-for-tapering-off-prednisone/

Is it this one? Dead slow and nearly stop reduction plan (DSNS - Tapering)
https://healthunlocked.com/pmrgcauk/posts/131189593/dead-slow-and-nearly-stop-reduction-plan
Lots of great information in this discussion by @dadcue
-- How to Slowly and Safely Taper Off Prednisone but ... no set rules.
https://connect.mayoclinic.org/discussion/how-to-slowly-and-safely-taper-off-prednisone-but-no-set-rules/