If you have not yet filed, you can go to My Info, and select that you can be claimed as a dependent on someone else's tax return,
If you
have already submitted your return: if
it gets rejected then you can
go in and make the necessary changes. If it is accepted, you will need to amend your return after you have
received your refund. The FAQ below will take you to a guide with the
instructions on how to amend.
https://ttlc.intuit.com/replies/7276605
