I have read that it can take up to 6-12 months for the adrenal glands to fully recover after the long term use of prednisone. Also, the patient can run into problems if something stressful happens and the adrenals are not fully functional. In that case the person needs to take some prednisone to get through the bad patch. I think it would be good to discuss your problems with your doctor. The doctor can run tests to see how your adrenal glands are working, and can also recommend what to do if you start feeling worse.