Increase your pace for the precise length of time it would take you to cover a mile at marathon pace. You'd be surprised how close you can come to hitting the exact distance. A continued drop in distance. Don't stay out too late tonight. You want to catch up on any sleep you might have lost during the hard weeks of your training.
Sleep loss is cumulative, and it's time to catch up.
If you're running less, you're also burning less calories. Get rid of the soft drinks and sugar sweets that you may have used to boost your calorie intake during regular training. You want to avoid, as much as possible, any blisters or chafing that might make next weekend's run uncomfortable. Incidentally, there are some excellent anti-chafing products. Body Glide is one, but there are a number of others.