You just got a 2023 W2 now? You need to amend the 2023 return you filed to add the new W2. You can’t amend Online. You will have to print and mail the amended return.
How to Amend
https://ttlc.intuit.com/community/amending/help/how-to-amend-change-or-correct-a-return-you-already-...
