I got all this done, several years ago. Will, executor, power of attorney, medical directives, cremation plan when I was going in for a major surgery I was not sure I would survive. Told my executor and POA person the secure location where all records were stored. I am single, I think many people depend on a surviving spouse to deal with this responsibility. May not be a survivor in this mess.
My father died without any thing finalized. Luckily, my surviving mother was a bookkeeper and a good records keeper and had her wits. A big problem was keys. My father had several storage sheds and farm equipment, etc. Three big key rings. Also, I think when he got a new key made, he didn’t remove the old key. Took a while to sort that out. So, put in my records box, I made a labeled, complete set of new keys for my property and vehicles.
It took me about four months to get it all together. I had the luxury of time. Good luck.