Being a fitness freak through the Air Force and before hand. You can use battling your Caffeine addiction to help your weight loss! That's some good news

You need to slowly weed yourself off the caffeine. Here are some steps you may take (message me on discord or in-game with questions)
1) Find out how much caffeine you take in on a daily bases (average is fine). Good thing about caffeine you can trick your body by replacing it with other energy providers.
2) Now the fun part...not really. You must take in 20% less Caffeine a week. Weekly will work fine.
3) Since you are coming off Caffeine you will need to do Cardio workouts with high carb diets, so you'll have long lasting energy from carbs so you can walk, run, ride a bike, etc longer to burn even more calories. You wont gain much muscle, if any but you will lose weight really fast.
Your diet will need to consist NO soda, fried foods, or candy. Sorry, diets suck but they work. Your workouts will consist of bike riding, running, and you can even do weights if you so choose. Weight lifting will be LOW weights but HIGH reps. so like curling 15-20 pound dumbbells but you'll do like 20 reps with each arm about 3-5 times. You can find many many cardio workouts and follow them or make your own like i love to do.