There is definitely a ritual aspect of breakfast. People tend to feel "hungry" at times they’re used to eating. It's a habit like anything else. But, if you enjoy it, keep doing it.

True, we don't eat while sleeping, but we aren't fasting every night... It takes ~12 hours after the last thing you ate for your body to enter a fasted state, and should continue a few hours for your body to do its work.

The 16:8 method seems to be the most popular form of intermittent fasting. As mentioned in the article, that means keeping your meals (calories) within an 8-hour window (and not eating the other 16). Black coffee, tea, or anything else without calories is ok outside of your eating window.

If you want to give it a try... If you sleep 8 hours: don't eat 4 hours before bed or until 4 hours after you wake up. Boom, that's 16:8 intermittent fasting, easy peasy!