My DS who is 3.5 will happily eat 2 weetbix with half a banana, chopped and a small tub of yoghurt on top. He tends to eat heaps up until 2pm then I cut out any snacks until dinner at 5.30 cause he wont eat it. Kids have heaps of energy to burn so let them eat, besides they havnt eaten for at least 12 hours by the time brekky comes they are STARVING (so my kids tell me...)