Change fine status from single to head of household

[law9]

I started my taxes but did not submit yet. I began filing as single but now realized that I should have filed as head of household. How can I change this? It does not come up as an option when I go in to edit/revisit my personal information. I have two children who are college students that live with me and are not paying for their living expenses.

[DoninGA]

If you do not have a qualifying person as a dependent on your tax return, you are not eligible for Head of Household filing status.