How often do you feed your child (specifically 3 to 4 years old)? Big 3 meals a day or more frequent and small portion meals?

3 meals with snacks in between like fruits, nuts etc But also dependent on the appetite and child’s activities. If they are running around whole day and all... perhaps should then also include snacks like fruit yoghurt smoothies, veg and cheese sticks, peanut butter wrap rolls etc