Not sure my running trued recovered after long Covid (I could't climb stairs for several months never mind run.After running the Manchester HM in May at my best ever time, I've noticed my runs are becoming more lethargic, even with me now not having steroids daily to help with long covid.
Not sure if the steroids have affected my breathing a little.
One thing I know now is I can just go out and run consecutive days in a row, need to rest up
Good luck with the recovery mate.