Post PMR safety?

I had PMR for 11 months and have been off prednisone for 9 months. I believe one of my Covid shots started the ball rolling with PMR but have had 5 shots all together - the last 2 while on Prednisone. I’m very scared of getting a flare or even another full-blown case of PMR. I’d really like to protect myself from Covid, Flu and RSV but can’t get an opinion from a reliable source as to what my chances of getting another case of PMR. The prednisone worked very well for me but I have shoulder damage from it and don’t want to chance having to go on it again. Anyone have more info?