Don't just use your legs try to use your whole body. Do pushups, crunches, arm lifts, curls, jump rope (many reps low weight for toning). Careful using weights at this time as you can put on muscle which weighs more than fat. (After winning try to buildup/strengthen the muscle to have a healthier metabolism.) Try to get your body very warm. Wear sweats and a jacket. (Swimmers exercise a lot but tend to keep on a layer of fat because they never get warm enough to burn it off.) Exercise first then eat, but if you can't then exercise right after eating. (Within 30 minutes) Try to eat the same low calories over 5 meals versus those calories over 3 meals. Drink a glass of water then slowly eat small bites. Talk or text while eating to drag the meal out. Enjoy the meal don't rush it.
After eating rinse your mouth really well with water or brush your teeth and rinse well. Get the food and drink tastes out.
Drink lots of water. Green tea is good for regularity. (The cabbage soup sounded like a good idea.)
Have you tried smoking unfiltered cigarettes like Camels? Rolling your own is cheaper! (Just kidding.)
Quit the water about 4-6 hours before the weigh in.
You left out important facts like, do you have to walk in to be weighed or can you be carried?
Put all your fast food coupons in his mail box. (I liked the fudge, shows you are serious!)
If you are reading this "GET YOUR FAT ASS UP AND DO SOMETHING MOBILE!". Oh yeah, staying positive about yourself is important too.
Don't forget to get a good nights sleep. 8-hours.
Also, thanks for making me feel overweight now, 5'11" 205lbs.
I try to measure inches instead of pounds because people exercising to burn fat usually will gain muscle weight while losing the fat. If you lose inches and keep some of the weight because of muscle gain then your metabolism will be better and you will maintain a healthier weight longer.