I'm a bit worried about how long my immune system might stay suppressed after taking steroids. I am prediabetic, and I'm on steroids for a condition, but I'm not taking any additional medication for sugar control. Right now, I'm on Metformin 500mg to help avoid any steroid-induced diabetes from my post-covid treatment. I took Methylprednisolone: 16mg for 5 days, 8mg for the next 5 days, and then 4mg for another 5 days. The last steroid dose was on May 5th, and I tested positive for covid on April 13th. It's been about 21 days since I tested negative for covid. How long can I expect my immune system to be affected?