Since you filed the tax return, you will need to amend the 2024 tax return add any new information.
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
Did you e-file? Did you click a big orange button that said "Transmit my returns now?"
When you e-file your federal return you will receive two emails from TurboTax. The first one will say that your return was submitted. The second email will tell you if your federal return was accepted or rejected. If you e-filed a state return, there will be a third email to tell you if the state accepted or rejected your state return.
If you did not e-file, or if the e-file was rejected, you can go back and enter your spouse's income.
When you are entering income on a joint return, every income entry screen will either have a spot with both spouse’s names there, or when you click to enter a W-2, 1099R, etc. it will ask you by name which spouse it is for. You do not have to wait for the software to “ask” you for your spouse’s income. Go to the screens to enter your spouse’s W-2’s, 1099’s, etc. just like you did for your own income. Then look for your spouse’s name there.
If you did e-file and the return was accepted, then you have to wait for the return to be fully processed and then amend to add the spouse income.