I think I finally have been seeing some success with hypnosis files. I've been listening to various incontinence files by wohermiston for the past 3 days.
I've already noticed that its becoming more natural for my bladder to be naturally relaxed. My subconscious isn't at the point where it naturally keeps my bladder relaxed but I can feel it approaching that more days of listening. I don't have any diapers with me so this might be a problem if/when I end up having an accident.
My plan is to keep listening until I wet the bed or have a daytime accident. Then I'll decide if I should get some protection and continue listening, or stop altogether.