CA is known for being especially tenant friendly.
I live in CT and have heard horror stories from colleagues (accidental landlords after 2008) where they sat for 6 months without rent before they could evict the tenant from their - trashed - property. I'd expect CA laws to be even more lopsided in favor of tenants, especially during this time with the pandemic.
It may appear expensive now, but I think they best thing to do is to consult with an attorney in your local area. It will likely cost you some money (maybe a couple of hundred now + a couple of grand in retainer for his services), but I am afraid the costs you are likely to soon start incurring is going to be much higher.
I would look up which attorneys represent the big landlords in your area. Usually each state would have a website that will tell you who would be authorized to receive lawsuits, that's typically the lawyer's office. I'd visit them for a consult, and if satisfied with the discussion, would be ready to write a check for retainer.
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(edited to add later)
This is the state government portal where you can search authorized agents for large landlords (that are large enough to be "corporations") in your local area.
https://www.sos.ca.gov/business-programs/business-entities/cbs-search-tips/These are typically some large lawyer's offices. They should have boilerplate processes for eviction appropriate for the local laws.