Hello, I am about to become a mother for the first time to a 20 month old and a 7 and a half year old and I have no idea how much food I am supposed to give them, I'm fine on what they should be eating, but I have no idea how much is too little or too much. The 7 year olf wears 9-10 clothes and is tall for her age, the 20 month old is fairly average and eats anything that is put in front of her but I'm worried about when i should stop! All advice gratefully recieved.