How to capture thoughts while falling asleep?
I tend to take an hour or so to fall asleep at night, and while I'm laying there comfortably I tend to have some thoughts during that hour that I would like to capture. If I roll over, grab a flashlight, grab a pen and paper on my side table, and write a note, I can capture that thought but my general train of thought gets thrown off track and it takes me several minutes to get comfortably situated again, and to get my "happy train of thought" rolling along again.
Part of the problem is that I have been diagnosed with low blood pressure.
Another part of the problem which I failed to mention so far is that my wife is often laying next to me falling asleep as well, and I don't really want to wake her up. She tends to fall asleep much faster than me, but she can be easily woken, or at least disturbed, by my rolling around grabbing my flashlight and pen and writing a note, and rolling back into a comfortable position again.
Sometimes I try to go to bed an hour earlier than she does, which does seem to lessen the effects of keeping her awake, but it's still difficult generally to capture thoughts while drifting to sleep, or simply laying in bed comfortably.
I guess what I'm getting at here is I'm wondering if anyone has a technique of capturing those thoughts without moving bodily. Some sort of a short-term "mnemonic" technique, or some other techniquie whereby I could "remember" those thoughts until the morning, and capture them onto paper upon arising.
I can't seem to remember my thoughts in the morning, at least not without a technique.