My DS is 18m, and generally eats well. I feel like he mostly gets a balanced diet of about the right amount of food.
Recently he's been screaming for more food in the morning and evening, on nursery days. His food intake looks like this on nursery days:
7.15am - cup of milk and a bit of his dad's toast
8.30am - breakfast (at nursery) usually weetabix
10am - snack (usually fruit)
11.30am - lunch
2pm - snack (usually savoury, crackers/breadsticks etc)
4.30pm - dinner
6.15pm - cup of milk or snack at home. E.g. Toast and philly, fruit, baby crisps/biscuits, boiled egg
Last night I made him some toast when we got home, and he literally screamed MORE even though he'd had his dinner at nursery. I was stuck because I didn't want to say no for the sake of it, if he was hungry there's no reason not to give him more food. But, I also am really worried about over-feeding him, especially when I've not had oversight of what he's eaten all day, except whether he had 'none, some or all' which is the info we get from nursery.
At 18m is he still responsive enough to his body that if he's asking for more he genuinely wants more and is hungry? Or is he now at the age where because he knows he can ask for more I need to be more aware of how much he is eating?
On days when he's with us I worry about this less because I know what he's eaten all day and whether another piece of toast or a yoghurt before bed is reasonable. Just to add we always brush teeth between any snacks and bedtime.