I do pretty much one meal a day (second "meal" being cocoa or coffe with milk in the morning) but it took slowly cutting meals over time + eating more filling and slower digesting stuff overall.

Like replacing egg + toast with egg + some diced potatoes and onion pan-fried with the egg will probably keep you sated for longer.

Now the hunger comes in slowly and generally I feel a tiny bit of hunger when I fall asleep, wake up hungry, get my glass of milky drink for the "breakfast" to keep hunger at bay for next 2-3 hours, then get/cook something for dinner.