Mine eat LOADS, they really do
I have tended to go with their appetites, tbh. They are 3 and 6
I think I'm pretty confident that I can tell the difference between genuine hunger and 'boredom' hunger (and I see both, a lot )
To give you an idea of what they eat:
1-2 bowls of cereal and possibly a slice of toast for breakfast
Something on toast (beans, eggs, sardines etc) or a sarnie for lunch. Fruit or yogurt after
Dinner - the usual fare... pasta, shepherd's pie, fish with mash and veg blah blah. Maybe more fruit after
They will have snacks inbetween too. Crackers, or cereal bars, or more fruit. Maybe a couple of biscuits. RArely crisps, sweets a couple of times a week
Only have milk or water
Portions are a fair size,they nearly always eat it all
I don't but ready-made stuff though and try and avoid crap cereals. HAve brown bread not white
They are like whippets. DD1 in paricular
I think as long as you're generally avoiding ready-made, convenience foodstuff you're probably alright. And not overdoing sweets and crisps etc