Tip for passwords in general:

Create a password, but don't actually use it yet.

Like... make an empty account for Bitwarden (or if you use Keepass, make an empty database) with that password, then keep logging in every 5 minutes or so... for like 3 times... then log in like every 1 hours or so for lile 3 hours... then ever 6 hours...

etc...

make sure you spend like 1 or 2 days doing this routine... of logging in every X time to get it committed to memory...

THEN after you know its memorized, start using the Bitwarden account (or Keepass database).

Also if you are using Bitwarden, pay like one time for the premium (its yearly but you can cancel the renew).

Set up emergency access to anoyher Bitwarden accouny with a secondary email

Then add that secondary Bitwarden account as your Primary's Emergency Access contact.

Then write the SECONDARY account's Email address, Email Password, and Bitwarden Password, on a piece of paper.

Set it for like X time then check your email for your primary account every X/2 days (if you set it as 14 days for recovery, check it at least once every 7 days) to make sure nobody got your piece of paper and tring to steal your passwords.

You can store it in a bank safe... or just in a drawer somewhere at home is fine too. Even if a roomate/family member gets it, you get a notification if they try to do emergency access...

This protects you from randomly getting retrograde amnesia...

And this is better than actually writing your PRIMARY account's log in details down, because it give you a 14 day buffer (or whatever days you set it to) before someone can actually make use of those credentials...

And afiak, you only need premium to add an emergency contact, you don't need premium for future years to keep it continue working.