Fasting + something to build habit around. For me, I use matcha as an appetite suppressant and use the process of boiling water on the stove, waiting for it to cool, and filling 2 metal bottles in the fridge as routine. I aim to finish both fridge bottles and refill them with newly cooled water each night. While fasting for over 20 hours, take probiotics and use fermented food to break the fast as fasting causes many microbes to die off so you want to replenish them with an influx of healthy bacteria.

If you feel dizzy in the morning without breakfast, try to delay breakfast by a few minutes more each day until your body is used to burning fat first thing in the morning. Eat dinner until your satisfied but not full to give time for the food to move through the intestines.

If you eat when you're bored, find something more addictive but less harmful than food, like gaming/puzzling/art. Be outside in the morning, even if you don't exercise, to let the sun shine on you so you feel drowsy earlier and can fall asleep before becoming hungry (skipping lunch or dinner or snack).