This. If I stay full for a few extra hours, I'll be eating later or less next time. It all balances out. If, and only if, you are eating enough protein (in my own, personal, just for myself, giving-advice-is-now-taboo-on-this-forum, experience). Skimp on the protein and the fat and carbs you ate will dissolve within an hour.
IMO clean plates are good!
I plan and shop on a 7-day cycle. The list typically doesn't include anything ready-to-eat so consuming beyond what I prepared for dinner is not an option. If dinner was too light or too heavy I'll make a mental note to adjust next time but I'm not going to waste food.
Steak, eggs, potatoes - fruits, nuts, berries and forage. Coconut milk and potent herbs and spices. Tea instead of coffee now and teeny amounts of kelp daily. Let's see how this does! Not really had dairy much, and gut seems better for it.