Hello,
It's not like, if you don't eat or eat less will not cause weight gain.Remember that the physical activity even plays a very important role in your weight management.
Next Steps
For a proper diet counselling you can directly contact me on practo
Health Tips
Few things which you need to follow for your weight management
Be physically very active
Small and frequent meals should be included
Avoid Refined flours, Beverages,Extra sugars
Drink plenty of water.
If hungry try to include healthy snacks
If stressed,try to do meditation.