I can tell you what I did... I did Bulletproof diet Intermittent Fasting + Carb Nite. Which is really eating between 2pm to 8pm. And going to bed at the right times around 11pm and waking at 6-7am.
Basically Dave Asprey grabbed a lot of information from Kiefer, and applied it to his own protocol to create an excellent roadmap. Unfortunately, Asprey never credited Kiefer for any of it, you can hear about it from Kiefer's thoughts about Bulletproof and Asprey floating around the internet. In summary, Kiefer isn't too keen about it.
But I use the Bulletproof Intermittent fasting as a guideline of what to eat and what not to eat, and in truth, I been getting way more success on that, than following carb nite.
I did learn though, that MCT oil is considered harmful for non athletes, if you ever work out you would like to add MCT for your workouts. But for non-athletes, coconut oil is the way to go. Not grassfed butter, or any kind of butter.. just coconut oil.