I know archus.
I am unable to manage without it.
In that 20 day fast I only made it 3-4 days before I started having black coffee, and about 15 days in I was so miserable I basically fell back into it.
I have not been able to go past 3 days.
I have to find some new strengths and hopefully staying with my new found insulin sensitivity I can manage without it for longer and longer.