Those are low cortisol symptoms. The half-life of HC is anywhere from 1-8 hours. If your dosing HC 4x daily and it lasts 6-8 hours in your body, you should be fine. Others metabolize it far too quickly to gain any benefit (myself included). My guess is you would have to switch to something like medrol (methylprednisolone) which has a much longer half-life. 1mg medrol = 5mg HC.