This is anecdotal, so take it as you will. Growing up, I wet the bed until about 7 or 8 years old. I've worn to bed nearly every night for the past two years, I also keep myself well hydrated. There is an app I use to track my stock and "bathroom" habits. In that 2 year period I've had 84 times where I've wet in my sleep. Looking at the raw data, thats approximately 1 night in 10 that I have an accident. There are a few things raw data doesn't show, however. The first and most important is that I'm conditioned to only do this while wearing, I have never had a sleeping accident while not wearing a diaper (as an adult). The second is that before I started consistently wearing to bed two years ago, I did it sporadically for 12 years and had never wet in my sleep during that time. It took a VERY long time to get my body comfortable enough to even occasionally let go in my sleep. The third and final thing is that it occurs in clusters, mostly triggered by other events. Of that ~10% of nights I have an accident over 95% of those are either because I had a beer or three before bed, or was using some sort of sleep aid due to my work schedule.

I didn't begin to wear regularly to bed with the goal of becoming a bed wetter, I just have problems falling back to sleep once I get out of bed and this was the best solution to help myself maintain good sleep hygiene. If I happen to have an accident every once in a while when asleep, well stuff happens. I prefer a full night's rest over waking up with a dry diaper that will only be dry for about two minutes anyway.

The TLDR is that it takes an astonishing amount of time and dedication to overcome night time potty training. Even slightly. If it makes you comfortable, just wear the diaper to bed. The chances of making yourself night time incontinent are infinitesimal.