Wow.. well, losing that much kg would take some time and it needs efforts. You need to be balance in eating and working out. You couldn't just do diets and no workouts. First, you should try not to cheat, stick to your plan. Eat healthy foods and it's okay to eat 3-5 times meal a day, with a small portion, because we actually need to eat every 3-5 hours. You should try black rice as a substitute for usual rice, or any whole grains. It is a complex carbohydrate, which is nutritious and it takes time to get digested (so that you wouldn't get hungry too fast). Now for the workouts, try to do some routine jogging or any other kinds of cardio workouts. Building muscles in certain parts would burn calories even faster. Hope this could help, good luck!