Is my status common-law when filing for tax year 2022, if my move in date was Feb 2022? It has not been 12 months at Dec 2022. AB considers at 3 yrs.

If you are unsure of your marital status, you will need to contact the Canada Revenue Agency (CRA) and confirm it with them. 

If you are in Canada or the United States, you can call the CRA at 1-800-959-8281. If you are elsewhere, you can call 613-940-8495. This page has more ways to contact the CRA: Contact the Canada Revenue Agency