In order to add missed income, you'll need to amend your return.
From How do I amend my federal tax return for this year?, here is how to amend an accepted return in TurboTax Online:
Here is some more information on filing amendments: How to File an Amended Tax Return with the IRS
Wait for the return to be fully processed and then amend to add the SSA1099. Do not amend until the IRS has processed your return in case the IRS catches the mistake and adjusts it for you.
You will need to amend your 2024 tax return to add this income.
Before starting to amend the tax return, wait for the tax refund to be received or the taxes due to be paid and processed by the IRS.
See this TurboTax support FAQ for amending a current year tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-federal-tax-return-current-year/L7eS6o1qh_US_en_US?uid=lfunevhk