While your above article on hypoglycemia is highly informative, and I very much appreciate your trouble, I would continue to suggest that going without food for many hours is not a good start to a liver flush. It is all too much at once for a toxic, weakened body.
The best flush I ever had, I ate at 6 PM and then took the oil at 10. Some of my chronic symptoms went away and I felt just plain healthy & happy for awhile.
When I was only 27 and reasonably tough, I fasted for several days and think I damaged myself.