Yeah, I hate to be another party pooper, but I don't see that as being a realistic goal. March 8 is 16 days from now. To lose 12 lbs by March 8 means you'd need to lose almost a pound a day, or 6 lbs a week. That's a calorie deficit of 3500 calories PER DAY.
Running a 9 minute mile burns about 160 calories for every 10 minutes you run.
That means you would need to run (or do other exercise at a high intensity) for 3.7 hours per day to burn the 3500 calories you'd need to.
Assuming of course, you can maintain a 1200 calorie diet for those 16 days (which would be low for your current body weight).
A more realistic goal would be 5 lbs over that 2 week period, then take any other weight you lose as a bonus.