do this if u want to lose height

You have to exercise and eat healthier, otherwise you may not notice any improvement and—even worse—you may gain weight.
If you need to lose more than 10% of your body weight, consult with your primary-care physician before beginning any weight loss plan.
Try to limit water consumption to 10 glasses per day. People can drink far more water than necessary while exercising, however, putting them at risk of water intoxication. (Water intoxication is incredibly rare, and easy to avoid by making sure to consume electrolytes along with the large amounts of water)
Limit the following:

• Soda: the average soda is full of calories, sugar, and other chemicals.
• Too much bread/butter: A slice of bread with butter has around 170 calories (100 calories per medium sliced slice of bread and 70 calories per 10g of butter).
• Large portions: You’ll end up eating much less and save a lot of money as a bonus!
• Dressing: Salad dressing is the main source of calories and other things to avoid in salad, try vinegar or hummus as a low-cal dressing