I put i can be claimed as a dependent. But I wasn't claimed so can I fix that?

Has your return been filed? If your return has been filed, you'll have wait until it is either accepted or rejected.

• If your return is accepted you can amend your return.
• If your return is rejected, you can make the necessary changes.

For more information on amending your return, please click the link below.

How do I amend my 2019 TurboTax Online return? - Community