Fuck. I am so sorry. Being that age and having to take care of everything is just rough. All the death certificates, cancelling services, funeral, house, car, and a million other details while you are still coming to terms that they are just gone. I just sort of went on autopilot and then spent the next 2 years a total complete mess. I am 37 now and it still fucking hurts.
The one dumb thing that helped me grieve was to just talk to him. I used to call my dad everyday on my 25 minute drive home to work. So, I would pretend he was in the car with me and I would just talk to him.
All I can say is cherish the few mementos you really care about and don’t drive yourself insane on trying to hold on to every item they owned. Scan pictures. Get help and talk to someone. Get someone removed from the situation to help you clean things out. I paid a random handyman a friend had around a couple hundred dollars to just take care of the parts I couldn’t handle (dead body things…) and donated a bunch of items that flat out had no value to me.
I hate that! Especially when it was the correct version and then magically one day it is some other one. One time it played that awful pop version of Professional Widow by Tori Amos and that was very upsetting until I found the normal version that sounds awesome.