how can i amend the tax returns for 2023?

See this TurboTax support FAQ for amending a prior year tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-already-filed/L4VjJ9BA2_US_en_US?uid=ld1n99kr

You will have to take steps to amend your return.  You can see the steps below.

Once you are ready to amend the return, you can update your filing status and dependents.

• Under the My Info tad on the left sidebar.
• Select your name, then Edit.
• Follow the interview.

If you want to make changes to a tax return that has already been submitted  and was accepted, you should follow these guidelines to amend your return.

• You must first wait until the initial return is completely processed.
• You will have to use the same TurboTax account that you used for the original tax return.
• Once you begin your amendment, you'll see your original return.
  • The refund calculator will start new at $0 and only reflect the changes in the refund or tax due
  • Only make changes to the areas of your return that need amending.
• You have three years from the date you filed your return or two years after you paid the tax due (whichever is later) to file an amendment

Sign in to TurboTax

1. On the home screen, scroll down to Your tax returns & documents and
2. select the year you want to amend
3. Select Amend (change) return, then
4. Amend using TurboTax Online
5. If you're told to amend your return via TurboTax Desktop, follow the steps for TurboTax CD/Download below instead.
6. On the screen OK, let's get a kickstart on your amended return, select the reason(s) you're amending and Continue.
7. When you reach Here's the info for your amended federal return, select Start next to the info you need to change.
8. Continue through the screens, make the changes you need to make, and carefully answer the remaining questions to finish amending your return.

Also see:

How do I amend my federal tax return for a prior year?

How to File an Amended Tax Return with the IRS