Is 25- 30 minutes of jogging enough exercise with the right diet that works with me?

This is what I eat at least once a week: Fruits and Vegetables, Milk and water only ( no soda or juice ), bread with peanut butter, egg whites and sometimes turkey bacon, meat, beans, baked chips, and nuts ( I'm 113- 114 and in 7th grade ) I also bike a lot and i want to go down to 98 or 96