I take half of my pred in the morning and half at night, I believe it lasts about 12hrs.   So for me I take 2mg. in a.m and 2mg in p.m     The NIH recently recommended that I try 1/2 mg. less a day so thats what I’am doing now. ( I have SWCAH)   Always ck. with your endo when making med. changes.

Jan B