If you try to force children to eat nutritious food, they won't like it and most won't eat it. All you can do is offer good food, have regular meals and snacks, and make eating pleasant. Typically, iron-rich foods are challenging for children. For example, green, leafy vegetables have a strong flavor. Eat and enjoy them yourself, and after a while your child will try them and maybe even learn to like them.
Meat can be hard to chew and swallow.
Make meat moist and tender. Your child consistently eats a diet low in iron.