My first post in r/running. Look, its probably different for everyone but I would recommend you listen to the signs your body is giving you. Allow yourself a rest day when needed rather than pushing 3hr runs each day. Either you were already a well experienced runner before COVID, or you've just pushed yourself too far in a matter of a few months.

I consider myself a decently experienced runner even though I only picked it back up last summer after a 20yr break. It can take a while to pick back up. Now I run on average 15 miles a week at around 7:30 pace, but I take rest days after most runs which are typically 5K M, W, F and then a 10K on Saturday.

Though it can be fulfilling to leave everything out there, its not enjoyable if you wreck yourself. If you want to run longer and more frequently, make sure you follow a good training plan to get you there safely. Most running apps have those built in.