I have a morning routine. Usually I go for a walk and read for an hour before doing anything else. But I almost never eat breakfast. I'm just not hungry in the morning.
By midday I'm on an adventure. Some days, it takes me in a direction where it makes more sense to skip lunch than to stop and have it.
When I'm hungry and it's convenient, I eat. When I'm not, I don't.
It's almost never the case that I'm hungry for a meal three times a day.