Is this the one you mean? I've never tried it but others may have tapered using this method.

"Sep 1, 2021 — Another technique is known as an alternate-day taper. For example, instead of simply lowering the dose from 4 mg to 3 mg of prednisone, a ... " -- How to Reduce Prednisone Withdrawal Symptoms:
-- https://www.verywellhealth.com/does-prednisone-tapering-minimize-withdrawal-190242

I thought I found the “English Method” of decreasing prednisone on this forum, but can’t find it anymore. It basically is a method of decreasing prednisone very gradually. Instead of decreasing to a new dose, even by 1 or 1/2 mg, you alternate between new and old dose, gradually taking new dose more often until you are completely on it. I usually put the dose I take on a calendar so I don’t forget. The lower the dose is, the more gradual the reduction. As an example, I am now on 3 mg and have been on this dose about 6 weeks. Soon, I will begin taking 2 mg one day a week. When that works, I will go to 2 mg twice a week and 3 the rest. It will probably take me 6-8 weeks to get to the 2 mg dose. When dose is this low, may even need to go to 2 1/2 instead of 2. 2 years ago, at this time, I was at 10mg, last year 5 mg, this year 3. I had to go up to 6 in March when I got my 2 Moderna shots, but didn’t need to with the booster. It is slow, but hope to eventually get to remission, this is my 3rd bout of PMR. With the first, I went slow and was in remission 12 years, with the second, I went quickly and was in remission 10 months. Everyone is different, but this works for me. Takes a lot of patience.