You've got some drastic work to do, but I think you can get some appreciable results in two weeks.
1. Drop the grains and added sugar out of the diet. It's just for two weeks, so I think you can handle it.
2. Up protein and animal fat, reduce vegetable oils.
3. As many vegetables and fruits as you can cram in.
Basically this means, lots of fruits, veggies, and MEAT. It's best if you can cook it yourself, but if you can't, I'd even go so far as to actually recommend something like Carl's Jr. Low-Carb six-dollar burger. The caveat is that your total calories should remain 1500-2000 to fuel your workouts.
For exercise, run sprints up the sides of hills twice a week, lift heavy weights for low reps twice a week, moderate weights for 6-10 reps twice a week. Pick total body compound movements like squats, deadlifts, pull-ups, rows, etc. instead of isolation and machine movements.
And get eight hours of sleep a night.
Two weeks to go all out!
1) eat real food - more vegetables, moderate meat, moderate fruits, less grains, less sugar, less vegetable oils.
2) exercise - moderate intensity cardio, sprinting, heavy lifting, dedicated stretching and mobility.
3) live - relax, de-stress, meditate.
Disclaimer: I'm not professionally qualified to make any formal recommendations. I've just done my homework and I'm my own guinea pig. All of my data, unless otherwise cited, comes from a sample size of n=1 (me).