Reading this again, I've tried/practiced many times over the past 8 years but getting myself to pee laying down is still a struggle. Even standing up, start to pee, then lay down its still a struggle. And as I mentioned above in the middle of the night I don't want to really mentally focus for a few minutes trying to pee, I'll be a wake for an hour. Easier on my sleep to go sit on toilet and stumble back to bed. So I practice in the evening.
I'll keep practicing in the evenings but its slow going with no real progress.