It may be possible to continue to get COVID tests partially or fully reimbursed from your health insurance if your plan is regulated by the CA DMHC:

https://www.dmhc.ca.gov/HealthCareinCalifornia/GettheBestCare/COVID-19.aspx

https://www.dmhc.ca.gov/Portals/0/Docs/DO/COVID-FactSheet.pdf

Also, the post office is offering free rapid antigen COVID tests again this year:

https://www.covidtests.gov/