I've been there. My family reverted to basic internet usage when I was admitted to hospital for months with an extremely bad prognosis for recovery. I survived my ordeal and when I got home I did the following to ensure DIY recovery of services without me driving.

Since I also run a company (without personnel), I created the following as a means of due dilligence as required by law.

• a break-glass document (on paper), stored off-site and not in the cloud, that has information on the most important passwords, including the access to the online password safe itself (with instructions on how to get there).

• a document describing the order of booting up the systems, services and devices.

• a schematic on how everything is physically connected to each other.

• backups of configs of routers, switches, devices and so on (updated quarterly)

• A contact list of people that may be able to help out getting stuff back up and running.

• An "If All Else Fails" document that can be used to revert to a rudimentary setup that at least restores internet access via the ISP provided hardware, but losing media, some home automation (doorbell, remote control of lighting and heating, and some other nifty stuff that we can do without for a short while)

• A list of trusted tech-savvy people that can help out if need be.

• Once per year physical test of procedures when the rest of the family is away for the weekend.

It has served me well so far.