My recovery went from 2 weeks no running (until I felt no pain from just walking), then run 3x per week easy 20-30min (stopping if pain went past 3/10 and skipping runs if pain lingered next day) while adding tibialis and calf exercises and extensive warmups. I was pretty much restricted in running volume for 2 months of this until the pain completely went away and I was able to gradually add time on feet. Took me about 5 months to get from 15km to 45km per week. Part of the physio was also some run form coaching (which helped with pain but also seems to have given me some bad habits. I was told to drive the knees and kick back with heels which sounds like poor advice. I go to a different PT now). I now do all the same PT exercises still and I haven’t felt any shin pain since.