Again - I appreciate your feedback Archus. In case you're still reading and for others' interest I wanted to follow up:
Due to time constraints I did end my fast on Tuesday - all is well so far. Overall, I'm not sure how much autophagy I accomplished due to the amount of yeast/fungus that developed, which also has me concerned. Most of it in my mouth/throat subsided once I started re-feeding (and my theory on this is it traveled back down towards my GI...which isn't good.
So I still have to figure out a long-term approach. I've been working on this issue for years. I also wanted to make the point that no, this isn't due to a bad diet as you suggested. I've been on a mostly sugar/grain/dairy-free diet for years. These GI issues started when I received a flu vaccine, had multiple 30-year old Amalgams removed incorrectly AND moved to a very wet, moldy, fungus-y climate all within a month or two apart. Subsequently, a year later I started on IV Antibiotics , which I was on for 3 years. I've tried countless natural and pharmaceutical antifungals, which work in the short term but here I am.
The fasting was an eye-opener, because I wonder if I had stuck it out as long as I had wanted if I could have eliminated the overgrowth permanently because nothing else has done it. Another crazy thing is that I've been asymptomatic for yeast/fungal overgrowth for the past year, yet it was still there probably hiding within biofilm that my body started to break down during the fasting. This stuff is stealth and military-grade.
Since no MD or ND or other specialist seems to be all that experienced with yeast/fungal overgrowth I had to learn a bunch on my own. There are some good resources online now. For those of you who suspect you might have issues, don't let anyone tell you "it doesn't exist". They're wrong and misinformed. Do your homework.