A bit of context:
I am a long time user of Proton (5+ years, Unlimited user) services. I am also a long time user of 1Password (since 2016). Understandably I have hundreds of items currently in my 1Password account, and a safe work flow on my devices with that.
Would it make sense to start moving those entries to Proton Pass (as it is included) and be off a bit cheaper, or keep them separated as to not throw all the eggs in the Proton basket?
Ideas, thoughts, tips or experiences?
Literally not the question
Bitwarden is a means of saving some money and also not putting all your eggs in one basket, so it kind of is an answer to your question.
As others have said, no matter what you use, make sure you have regular backups.