It can take some of us longer than others to feel better. My pain was around the knees, shoulders, elbows and hands/wrists, so like you, it was quite disabling. After a week on 15mg of prednisone I felt 70% better, and recall complaining to my doctor that I expected more. It took me a few weeks to feel 95% better. If there's one thing PMR has taught me, it's patience, and keeping as active as possible doing the things we can still do. Improve the diet, drink plenty of water with the prednisone, and keep the body moving.