Oh, I remember my mother making those huge breakfasts, but rushing off to work now is a whole different ballgame... When my children were little, I used to struggle with zero appetite in the mornings too!
What really saved me was making a little batch of overnight oats in a mason jar the night before. You just pull it out of the fridge and take a few small bites with your coffee whenever you are ready. It is light, healthy, and takes zero morning prep time at all!