I have been there, in high school I didn’t eat hardly ever. Maybe I would eat lunch but maybe I wouldn’t… In college I was told to eat every 3 holes and that was hard for me. But I tried. The more I did it, the more I noticed a difference in not only my energy but my scores as well. Keeping your body fueled is the key to any sport. But golf especially, because it is usually 4-6 hours long which means that we need to keep out energy and endurance up.
My recommendation is eating every three holes at least walking and at the very least at least twice per round if you’re riding in a cart.