I swear by blue-blocking glasses for this reason, especially when driving at night since the advent of obnoxiously bright LED (but I repeat myself) head and tail lights on every car. These are my current pair, no affiliation: https://www.amazon.com/gp/product/B07CXYT17C/

I am imagining a household transforming into Amish roleplay by 9:30 PM.

I’ve achieved a similar-but-less-impactful effect by putting Zwave dimmer switches where I could, and setting the turn-on brightness to be lower during a “wind-down” house mode.

If I try it again I’ll have to build my own battery powered lanterns with ultra-low-wattage incandescent bulbs (don’t want the spiky spectrum of LED for this purpose) to get them dim enough and in a useful form factor.

I could read and get around just fine by two beeswax candles (and after getting used to that, full room lighting seemed insane, it’s so bright) but most things you can buy are at least 5x that bright. Even most plug in night lights are brighter than two beeswax tapers.