[piou]

Step one, as others have said, is make sure things are rock-solid enough that you're not nervous about being offline. When nothing critical has gone down in 6 months, you can start relaxing. If things are going down once a month, you need to work on your infrastructure and processes.

I do make sure I'm always available to fix things within a reasonable time. Practically, I try not to do anything where I would be physically unable to get to a computer with Internet access within 30 minutes, though pre-pandemic I would set my phone to silent when I went out to see a movie or was at the gym. Sometimes this also means bringing the laptop in the car when going places you don't plan to actually work, just in case.

One side effect of needing to watch for incoming notifications: I have East Coast relatives who insist on texting pre-7am Pacific (sometimes 20-message text chains), and wouldn't lay off when I told them it was too early and I couldn't just turn off my phone because I need to check for work notifications. Texts and calls from them are now muted 24/7, at least until I eventually get a work-specific cell phone.