What are you doing to tackle the root cause of your PMR? Prednisone is not a healing drug, as you know. I had PMR and dealt with the root causes and was off the prednisone in 12 months. I would suggest getting 1mg and 2.5mg tablets as well. This way you can also experiment with dropping .5mg at a time. Most rhuematologists simply prescribe pills, they don't offer programs for solving the root cause. You should be in control of your own taper. Only you know and understand how your body is reacting to lowering your dosage.