At morning snack they never get a second helping. It's always 1 banana, 1 yogurt, lately - 1 Danino drink, etc. but just one. Lunch I give seconds if they want it. I have three kids (who especially at lunch) will eat two helpings and sometimes three. I let them eat because one is a tiny girl 2 yrs. old - a lightweight, one is a baby 13 months old and I spoke to the Mom, and the other one just eats (he's a boy). Afternoon snack is fruit. Often two helpings if they want it.