To me, two long runs plus two workouts doesn't sound right.
This extended covid problem is an opportunity to really develop your aerobic fitness and your basic leg turnover. Taking advantage of the opportunity can make you incredibly stronger as a runner, with potential for massive improvement whenever the next season eventually starts.
Perhaps something like this:
M- easy 30 min, strides
T- easy 30 min, strides
W- alternate either 20' tempo run or 8 x 200-300m-ish hills with walkback recovery
Th-easy 30 min, strides
F- easy 30 min, strides
Sat- long run, 60 min, pick up the pace for the last 10 min. Lunges, calf raises, squat-jumps
Sun- off
Then gradually increase easy runs up to 45 min, and long runs up to 90 min. Something like this can potentially build you into a beast compared to your former self.
Hammering 4 hard sessions per week (2 workouts, 2 long runs) may not be the best recipe for long term improvement as you look ahead to the next year or two.
Just some thoughts, hope they help :)