Three or four times a week. Most backyards have enough space for a 20 yard shot. No huge difference on yardage, it’s just moving down a pin. On the weekends go find a spot where you can go out to 60 yards or so.
There’s more to it than accuracy, but that can only come with hunting. Shooting in the backyard is peaceful and therapeutic. Some of my most relaxing memories are a cool summer evening shooting at my block in the backyard.