the first thing you need a strong diet
keep out from bread,salt,fast food,mayonaise,soft drinks.
eat your food grilled.
start at the first day by drinking 5 cups of warm water morning with 1 cup of warm water , 2 befor launch 1 befor supper and incease them until you reach 10 cups per day and continous like this to reach your recuired weight.

eat fish , meat , salads without peper or oil, small piece of grilled potato and eggs only the white.

with this programm you can lose up to 4 kilo per week.

Good luck
Regards