Next level is removing most or all carbs from your diet and restricting your eating window to a short time every day, no more than 4 hours. Which is what I do besides longer fasts.

I now don't even need to eat every day -- I had situations where I skipped entire days of eating because I simply forgot about it.

If you think about it most people have hundreds of thousands of calories on them in form of a huge fat layer covering most of the body which is enough for even lean people to live off for weeks at a time. If you think about it, it is pretty silly to complain one is hungry when there is so much energy stored on us.

I remember this thought struck me when I was reading about first Inuits trading in Canadian outposts. They would sell their furs and buy food. When a curious scientist decided to follow them he discovered they would stop outside the outpost, eat ALL food they just bought in one huge binge and then travel back home for many days or even weeks without eating anything. They were not only good at storing fat, but they were also good at recovering the energy when they needed for however long they needed. This is what means to be fat adapted -- being able to completely separate intake of food from burning stored fat for energy.

People nowadays are like a car that does not have a tank for gas. You have to keep pouring the gasoline into the engine constantly or it will shut down. What you want is a large tank from which you can be constantly supplying energy to your engine but you can fill this tank at your convenience.