If you need to Amend your 2023 return to add your wife's W-2 (that was not included), here's the steps on How to Amend a Prior Year Return. Be sure to save a copy of the originally filed return. It can take up to 16 weeks to process an Amended Return, so be patient.
If you already Efiled your 2024 return (with the 2023 W-2 included), wait until it is Accepted or Rejected by the IRS. If Accepted, you can then Amend your 2024 return to delete the incorrect W-2. Again, be sure to save a copy of the originally filed return.
If it is Rejected, then open your return and remove the incorrect W-2 and Efile again.
If you believe your wife's Employer is not withholding enough tax from her pay, here's some info on Form W-4 to help.
@NMc3
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