I need to lose weight please read all details?

Hi. Im a 12 year old girl. I need to lose weight. I'm to afraid to step on the scale but no one knows how much I weigh cuz I look less that I really am. Anyways can someone give me some kind of recipe like a drink that I would drink every morning that would make me full easily and make me not want to eat. Like something that would make my meals smaller. Btw I'm 12 so don't start giving me answers about pills and don't say I'm too young for dieting cuz you don't know how much I weigh and please no stupid and/or mean answers and like I said I'm looking for something to make me full faster and make me eat smaller meals. Thanks. :)