It sounds like you previously lived in CA. If that's so, when did you change your domicile to NV? Be aware that if you were previously domiciled in CA, CA considers you a resident for tax purposes until you abandon your CA domicile and establish your domicile in another state. See Section L on page 10 of this reference for more detail:
https://www.ftb.ca.gov/forms/2019/2019-1031-publication.pdf
Once you become a domiciliary resident of NV (and thus a non-resident of CA), only your CA-source income would be subject to taxation by CA.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
