Does anyone else's sleep fall apart right when life gets calm?

Last week was the quietest one I've had in months, and I slept worse than during the busy stretch. I keep half-waking around 3am and my brain starts doing a little inventory of everything, like it doesn't trust the calm. I even caught myself wondering if I somehow need the stress to wind down properly, which sounds a bit backwards. Maybe it's just the change in rhythm catching up with me. I've been trying to keep the bedtime roughly the same and skip the late coffee, but the 3am wake-up is stubborn. Does this happen to anyone else after a stressful period ends?