Less calorie intake
Many people tend to try fad diets
that promise quick results, but these generally do not work over the long-term. I would recommend decreasing your total caloric intake and exercising more to burn calories.
You can look online to determine the number of calories recommended for your body size. It may also help to keep a diary of your progress, as that may help motivate you to continue.
Answer assisted by Justin Fuehrer, Medical Student