That's why I'm reading this at 1:55AM local time! It definitely gets quieter, though, I'm in the suburbs so not that noisy to begin with. But now, no cars, animals outside mostly asleep (hear an owl sometimes), cell phone stops trying to scam me via voice and text messages, not even aircraft flying overhead (they start between 4-5 am, which is also when the first cars can be heard). Can hear my heartbeat in my ears. But my tinnitus is a lot louder. No job, so no need to get up early though I typically manage before noon.
I wouldn't say I "have ADHD" but I do have a what I call an "attention prioritization and low energy disorder" that nothing i've ever tried has helped. I hear stimulants might help, but never tried em, can't get em.