I have GCA , i am on ACTREMA IV. Started large doses of prednisone in OCTOBER. Now in January was down to 5mg and the once a month ACTREMA IV, FEBRUARY STARTED 4 mg predisone. Each month I will go down 1mg. ACTREMA is for 6 months finish in JUNE and the prednisone should be down to 1mg. Most of my pain is gone during the day but returns to my neck and arms at night. I feel the prednisone has helped but can't wait to get off of them. SLOWLY is the only safe way to get off the prednisone
You are so low now there will be hardly any adverse effects from prednisone. Continue to look after your bones with whatever calcium and D has been prescribed, plus appropriate exercise and Vitamin K2 (not K1).
You may have to be even slower than you anticipate with the last 4 mg of pred, as it will depend how well your adrenal glands are picking up their job again. As you’ve been on pred only a few months it may be quite easy, but take your time!