If it's on the 7th, meaning 2.5 weeks, I'd be out there running now if I knew I needed to cut some time. My suggestion would be to run for distance (3+ miles) on Mon, Wed, and Friday. Keep a modest pace, a little harder than just jogging. Then on Tues, Thurs, and Sat I'd be running the 1.5 mile, run it hard like there are recruiters watching you. Rest on Sunday. Do your situps, and pushups every other day. My two cents, but I had a good PRT.
GO DAWGS!!