Up to Guidepost 3, I’m familiar with this approach, sort of independently invented it, and use it with moderate success sometimes.
The guideposts past that, I ~never have remembered experience of. Guidepost 5⁄6 very occasionally, but if I remember experiencing them, it’s probably because I came back to full wakefulness while it was happening. Typically by that point I’m already close enough to count as “starting to sleep”. (And I’m counting “experience of getting immersed in nonsensical logic” as guidepost 6; it’s never accompanied by imagery past what you describe as guidepost 5.)
(It may be relevant that I have ~aphantasia, and experience minimal to no visual imagery in any context.)
Up to Guidepost 3, I’m familiar with this approach, sort of independently invented it, and use it with moderate success sometimes.
The guideposts past that, I ~never have remembered experience of. Guidepost 5⁄6 very occasionally, but if I remember experiencing them, it’s probably because I came back to full wakefulness while it was happening. Typically by that point I’m already close enough to count as “starting to sleep”. (And I’m counting “experience of getting immersed in nonsensical logic” as guidepost 6; it’s never accompanied by imagery past what you describe as guidepost 5.)
(It may be relevant that I have ~aphantasia, and experience minimal to no visual imagery in any context.)