I don't understand what you are saying here. It seems to me like you would expect hunger to increase over time after eating. Thus putting the part of your fast with the highest hunger intensity into your sleep time seems considerably easier than intentionally being awake for it?
I.E: If I skip dinner earlier I am effectively adding hours of minimal hunger experience but if I skip breakfast I am adding hours of maximal hunger experience.
I.E: If I skip dinner earlier I am effectively adding hours of minimal hunger experience but if I skip breakfast I am adding hours of maximal hunger experience.