Let's say that one day you died for any reason and no one in the family understands these things or you do not have family.
What kind of plan do you have ?
Teach all these things to someone from your family who you trust the most because on cryptos there is no ways to recover the coins if there is no private keys even exchanges won't give any coins when you forget your login details.Either you should open locker on bank and write all these things detailed or just tell them now.