Im 12 and what my mum and dad do is give me a choice of what i can eat and at school i ask them to give me certen stuff to eat also snacks are a good idea what i like is this mabye try these for snacks Up & Go's Le Snacks Rollups Salt And Vinigar Chips Pasta Take Away If you want more just ask
I will need a bit more detail to offer a helpful response. In general, as long as you are preparing the food and serving it at suitable times, 'Mother Nature' will take care of the rest.