If you have a good pre-existing network of contacts (or have a modicum of networking skills/are willing to do a bit of legwork) I’ve found there’s a constant demand for “low-end” sysadmin/devops work for small businesses - usually they just need someone to be on call in case their AWS/virtual hosting/or Shopify what have you go down. You could probably gather about a half dozen or so of those contracts, set up some alerts, and spend no more than a few hours a week on average of work and pull in enough to cover all your bills.

Like others, I’d recommend looking into FIRE principles at least, particularly the idea of Safe Withdrawal Rate - basically every $25-30 you have invested = $1/yr you can spend for the rest of your life.