Can I fix a form from my 2022 state return?

Yes, you can amend just a state return and not a federal return for a prior year if the issue is something specific to your state that needs to be corrected.  

Please follow the steps in this link to amend your prior year return.  You will need to start with your federal return but if the changes do not affect your federal return, proceed to the state interview section to make the changes that do not affect your federal return.  If your changes affect your federal return, you should amend both to ensure both federal and state returns are reported accurately with the taxing agencies.

The help article "Do I need to amend" has a lot of information to help you determine whether you need to amend your returns.