If it is soon, it will start the day after the holiday.

Eat only apples one day, drink only pure milk one day, and mix them one day, then eat only oats in the morning for the next four days, eat normally at noon (but don't eat too much, eat less rice, it is best to change this meal into a small piece of beef), and eat an apple for dinner.

You can lose a lot of weight in a week like this.