If your return has already been accepted by the IRS, you won't be able to make any changes. On the other hand, if the IRS rejects your return for some reason, you can make the corrections before re-submitting your return. See the instructions below.
https://ttlc.intuit.com/replies/3302459
However, if the bank rejects your direct deposit, the IRS will automatically issue a paper check for your refund and mail it to the address on your tax return.
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
