can you ammend an already accepted return?

Do not try to amend a return that is still being processed by the IRS or you could cause confusion and long delays.   Wait for the return to be fully processed and then amend if needed.

As xmasbaby0 mentioned, wait for the return to be fully process.

 To amend your return for the tax year 2024, select 2024 from the pulldown in the Documents tab.

Here are some things to know before you begin:

• Make sure you really need to amend.
• Wait until your return has been accepted (or mailed if paper-filing).
• Use the same TurboTax account you used to file your original return.
• Once you begin your amendment, you'll see your original return. Only make changes to the areas of your return that need amending. The refund calculator will start new at $0 and only reflect the changes in the refund or tax due.
• Any changes you make to amend your federal return will automatically be transferred over to your state return.