I think you should do every day minimum 4 hours body exercise. Drink 4 - 5 liter water every day. Drink water half an hour before meals. If you have the office job, so take a break at regular intervals.
To loose weight fast you should cut down sugar and starch from your diet. You should start eating protein foods like meat, seafood, eggs and pulses. You can opt for weight training also. These thing will help you to loose wight fast.