No, you shouldn't have to start a new Federal return. If you're in TurboTax Desktop, on Form 1040, enter the amount Overpaid in Line 34 to Line 35a (amount of Line 34 you want refunded to you). Delete the amount in Line 36 (amount applied to 2024). This should correct your issue.
If you're in TurboTax Online, from the Tax Tools >Tools menu on the left, choose 'Delete a Form'. From the list of Forms, choose 'Estimated Taxes and W-4 Worksheet' to delete. Return to the Estimated Taxes interview in TurboTax, under Deductions & Credits, and proceed through the questions again.
Here's more info on Estimated Taxes.
@oldmankingsfan
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