I received an updated T022 for Y2023 from my university after finalizing the payement of my tuition. now How can I update my tax return from 2023 that was already filed.

After you file

This TurboTax Canada FAQ tells you how you can do that using ReFile: I've filed my tax return. Can I still make changes?

You can login to TurboTax Canada Online 2023 here: https://ww1.2023.ca.turbotaxonline.intuit.com/