I’m currently at two weeks for each drop on Prednisone. I had an unfortunate GCA experience when I went down too fast last time. I was so adamant about reducing. Little did I know. I’m watching myself more closely and it seems to takes 5 days before I sense in my body’s reaction to the reduction. I get more muscle pain / weakness in legs mostly, then I know I need to plateau out of that before I take the next step down, usually another 6-8 days. So far so good.