My suggestion would be to treat this week as more or less normal, and then:
Sun - ~ 10 miles EASY
Mon - 60-75 minutes EASY
Tues - ~ 60-75 minutes with 4 x 4 minutes at ~ HM pace and 2-3 min jog rest
Wed - 50-60 EASY
Thurs - 35-45 EASY, maybe with 4-6 strong, relaxed 100m strides
Fri - 30-40 EASY or day off
Sat - 20-30 EASY
Sun - RACE!
If you want to experiment with a more aggressive taper, I actually ran my best HM this spring off the following (injury-induced) taper:
Mon (AM) - 8.5 miles EZ
Mon (PM) - 4 miles EZ
Tues - OFF (sore knee)
Wed - OFF (sore knee)
Thurs - 1.3 miles EZ (testing knee..... still sore dammit)
Fri - OFF
Sat - OFF
Sun - RACE! (~ 48s PB) - felt OK on the warmup and held up during the race. Was sore again after, but got better after icing for a couple of days.
Good luck.