YES, a 5 mgs drop in dosage is too large a drop.
How do I know this, you might well ask?
1. The latest INTERNATIONAL GUIDELINES for decreasing Prednisone for PMR patients, states that 5 milligram titration to a lower dose could engender a relapse.
In addition, every relapse makes it less likely that a PMR patient will ever be able to discontinue the use of Prednisone, and after 3 (three) relapses, the chances are virtually nil that titration will ever go below 10 milligrams.
2. PERSONAL EXPERIENCE: My doctor refused to listen to my description of the latest PMR guidelines. She insisted I titrate at 5 milligrams every 30 days. Finally, after 4 (FOUR) relapses, she allowed me to decrease by 2 milligrams/month (from 20), and then by 1 milligram/month when my dose was down to 10 milligrams/day.
But it was too late and too many relapses. I've tried numerous times to drop below 10 Mgs/day, and then, after week to ten days the pain is back and I have to go to 15 Mgs for a day or two and then I can go back to 10 Mgs.
DON'T BE BULLIED THE WAY I WAS.
Remember, the difference between god and a doctor is that god doesn't think he's a doctor.
Stick to the lower titration reduction, and if you need to (and are able to) change doctors.
If you want the International PMR guidelines for diagnosis and treatment, please contact me at 'firstname.lastname@example.org'.