My kids... The beginning

So I'm not generally not one to complain. I love my kids, but their eating habits and demands are so crazy I'm constantly trying to find new things to do to keep them happy and fed. My oldest has IBS I won't go into nasty details. She has difficulties digesting fats and dairy products because of this. My second has osteopena, and needs as much dairy and calcium as we can put in her diet. My third can eat a full in-n-out hamburger in five minutes when she's hungry. Finally my baby and only boy is growing... need I say more? And with only $100 a week for food I've learned to cook enough nutritious food to keep all my kids healthy.