Married filing separately in CA. We lived apart for all 365 days. Must we claim the same deduction (e.g. standard or itemized) and community property adjustment?

My divorce isn't finalized, and CA is a community property state. There are two related concerns, the first has to do with the community property adjustment and the other has to do with claiming standard or itemized deduction.

What I understand is that because my spouse and I were separate and did not mix income all year or live in the same household that we do not have to make a community property adjustment. Is that true?

We were told by one CPA that we have to both claim the same type of deduction (itemized or standard) but we were told by another that we do not under these circumstances.

Long and short she wants to claim itemized. I need the standard deduction.