Multi-state Return Question with Retired Spouse

My residence with husband is in Minnesota.  As of mid-2023, I am now considered an employee of Missouri.  In mid-2023, HR started taking state taxes for Minnesota and Missouri.  I physically worked in Missouri for three days since the conversion to a Missouri employee as I work remotely.  My husband is retired, and only has income from joint investments. I will complete the Missouri non-resident form to file with my taxes and will file a joint Federal return for all income.  How is joint investment income determined when I file the married filing separately state taxes?  I suspect I will only file a married filing separately Missouri tax return as my husband does not have Missouri earned income.  Is that correct?  Will my husband and I file separately for the Minnesota return, splitting out the investment income?  I will use Turbo Tax and purchase a second state return.  Thanks for any responses.