You must wait until the IRS accepts or rejects your return to make any changes, which will be around February 12 when the IRS opens efiling. If it is rejected, you can make the changes. If it is accepted, you must amend the return to make any changes. For instructions regarding amending your return, please click here.

If you want to review and update your 2020 return, please enter your information here by February 6, to have your 2020 tax return sent back to you.  You will then receive an email from TurboTax on February 8, letting you know that your return is available and providing you with detailed instructions on how to review, update and re-file your tax return without the Recovery Rebate Credit.

See: How can I review and update my 2020 tax return?