How do I remove a dependent after return has already been accepted?

[VolvoGirl]

If the IRS accepts your return, then you have to wait until it has been fully processed and you have received your refund or paid the tax due. THEN you can prepare an amended tax return 1040X and mail it in. You cannot e-file an amended return.  Meanwhile, DO NOT change anything on your return until you start the amended return. If you did change or add the missing info then take it out and put your return back to the way it was when you first filed it.

You can check your efiling status here,
https://turbotax.intuit.com/tax-tools/efile-status-lookup/

How to amend an Online return
https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577

[VolvoGirl]

Why do you need to take them off?  Don't they qualify?  If their return rejected because you claimed them and they don't qualify as your dependent they will have to mail their return this year.   So they don't have to wait for you to amend.

But if they do qualify as your dependent and you don't claim them they still have to say they CAN be claimed in their return.