3yo potty trained himself basically overnight???

So I'm still not 100% sure what happened here but I'm documenting it for future reference because this was the opposite of every horror story I heard. My youngest turned 3 last month and we had zero intention of pushing potty training yet. He just started asking to use the bathroom like a week ago and... that's it? He's been doing it? We're obviously still doing nighttime diapers and accidents happen but the daytime thing is mostly figured out. I know we got stupid lucky but I'm not complaining. Please tell me this holds and I don't jinx it.