hi Swairoo...your mom does not let you go on fruit diets etc as your too young and you need to eat correctly for your growth.. all you can do is continue with exercise like walks/ swim/ dance for 1 hour daily..eat small meals every 2-3 hours.. have oats porridge/ muesli with milk for breakfast, fruits and nuts as mid meals, Raw salads along with lunch and replace white rice with wheat roti/ brown rice..have sprouts/ eggs whites in the evening as snacks and reduce crabs intake at night like avoid rice and have 1 roti/ whole wheat bread.. along with soups, salads and veggies.. you can also opt for Chicken/ fish for dinner as long as it is not fried.. drink plenty of water..