"To be considered independent on the FAFSA without meeting the age requirement, an associate or bachelor's degree student must be at least one of the following: married; a U.S. veteran; in active duty military service other than training purposes; an emancipated minor; a recently homeless youth or self-supporting and at risk for homelessness; a parent who provides more than half of the financial support for a child who lives with him or her; or someone who has been in foster care, been an orphan or a dependent or ward of the court for any period of time after the age of 13."
https://www.usnews.com/education/best-colleges/paying-for-college/articles/declare-yourself-independent-for-college-financial-aid