I don't have a routine for it, but I typically run a mag of Gold Dots through at least 1/mo, and rotate mags while I'm at it. Since the craziness started, I'm slowing down. Lots of dry fire practice, and cutting my 150+ handgun rounds/week habit down to about 50/week.
I'm not bothered by leaving mags loaded for extended periods.
Currently Own: Beretta PX4 9mm, Glock 23 (Gen 4), Glock 19 (Gen 4) x2