Single User (single or multiple keyslots with similar or different passphrase)

Hello!

I am a single user and owner of the data in my laptop. I was wondering 
if it is any better to have single or multiple keyslots with same or 
different passphrases. I am using LUKS2 on a partition for root, home 
and swap volumes (LVM). And LUKS1 for a boot partition. Please suggest 
which of the following is better choice and why:

1. Should I have single passphrase and single keyslot for LUKS1 and LUKS2?
2. Multiple Keyslots for LUKS1 and LUKS2 with same passphrase.
3. Multiple Keyslots for LUKS1 and LUKS2 with different passphrase.


- My reasoning was that may be having redundant information, it helps in 
times of crisis for recovery.

- Note: The data will be owned and used only by me.

-- 
Thanks and Regards

Lamy