You need to choose to amend your 2023 file. See How do I amend my federal tax return for a prior year? and select to amend the states as well.
Next, you will make the adjustments in the federal or state section, probably like you did this year.
It would not take me long because I know the program and my guess is that once you select amend, you will also find it isn't hard to amend.
Reference: How do I amend my state return?
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