Im 16 and im 103 kgs, I am 1.67 meters tall and i have a big belly how do i get rid of it in 3 mounths?

I play rugby every second day and go to the gym so iv gt quit a good ficque, my upper body looks great arms and shoulders bt i need to lose my love handels and belly, Iv tried many diets and I somtimes eat twice a day other than that im very healthy