Yes, I understand that there is not only one method or theory in epistemology. It’s a complicated network:
Epistemology - Wikipedia
I found this outline helpful. An overview of core topics with links to e.g. types and features of justification, belief, truth (helpful for beginners):
Outline of epistemology - Wikipedia
It shows separate branches of knowledge with a wide scope and spectrum of intersecting themes.
You can scroll down and click on topics like ‘Truth’ and ‘Justification’. A fairly easy, informative read which can be taken slowly and carefully.
An established philosophy site can require more effort e.g. Understanding (Stanford Encyclopedia of Philosophy)
Yes, the complexity of the subject is clear. However, I am not certain that a forum discussion, like this, would eliminate the inherent and interesting problems.
It is simply another theory which seems to be included in your book. See post 40/65 in Clarifying the Concepts of Knowledge - Metaphysics & Epistemology - The Philosophy Forum
I don’t wish to get into the complications of your argument. It is supposed to be a clarification of the concepts of knowledge. I will leave it here, for now.