Will update tonight Lucy, son has been sick with staph infection over last four days.
ACK! Sorry to read this. My daughter had it a while back. No fun. I hope he's feeling better.

What did I learn?
During this session believe it or not, I have learned that even though I may believe I did not have any symptoms during meditation because I went straight to sleep, this is not true. I was still really trying to pay attention to my body and I noticed that when I am really tired or sleep deprived my body goes into the symptoms of sleep either much quicker or (I know this is not the first time this has been stated) but now I am questioning if my body 'bypasses' certain sensations or I just did not noticed them. For instance, during this session I don't remember the feeling of floating, falling, getting really big or shrinking, etc. If I did notice a 'floating' feeling...I think I was probably already dreaming and sleep.

So now I am wondering (if this has anything to do with WILDing) when I am really tired and starting meditation, is there a way to still be able to 'catch' the signs of falling asleep...even you can barely keep your eyes open before your head hits the pillow (hope you can understanding what I am asking)???.
You know what? I have been trying to analyse this myself for several years and I really don't have a solid answer. When you have no memory of something it's hard to figure it out. I think we either just forget or we slip unconscious so fast that we don't experience any of it. It seems like WILDing or waking into SP is just staying in the halfway state. Keeping the mind conscious while the body goes to sleep is a real balancing act that, in my opinion, isn't always possible. It must take great mental discipline to master. Of course, things like stress, sleep deprivation (even mild), current (n)REM states ect. can really sabotage the whole thing. I wish I had the key to all of it but don't we all? The only good thing about being extra tired (for me) is that I can hit really vivid HI easy and have super early REM, but staying lucid is way more difficult. I was pretty tired last night but the RL got me up within an hour. I notice I was deep in some super vivid dream already. BTW I've got to work on my NLD recall

I hope to have some solid meditation time tonight. Good luck with the rest of the experiment! Are you going to stop in 4 days or just stop reporting on it?