I'd suggest you concentrate on making at least one day in the middle of the week (W-Th?) a recovery ride day. Go really, really slow; gear down and spin; don't push it. Or maybe, depending on your schedule, ride to (or from) work at a recovery pace two days in a row. The miles will still add up, you'll still reset the baseline, but it'll be easier to finish the week and have something left for weekend rides.