FL self employed to non-resident CA w2

Good Evening! I certainly hope I'm posting in the right place.

My wife and I live in Florida. We've always filed jointly and I've been freelance while she's been a school teacher. This year I took a remote job based in California. I did as I always did in years past with a w2 and put 0 dependents for max taxes taken.

At first, I didn't realize I'd have to pay CA state tax. Currently 25% of my paycheck is being withheld (no insurance). 

 

I've been using turbotax for a few years now. I know it will inquire and assist with some of this but also wanted some human input.

 

My questions are:

Should I file separate of my wife in April?

Should I change my i9 dependent total?

 

Thank you for your assistance!