Did you read the link that I provided? If you are a US Resident for the first part of the year, you are considered a Resident for the entire year, unless you specifically qualify for and make a separate election statement (but if you are considered a Resident for 2023, you don't qualify for that).
As for 2023, have you added up the "days" for the Substantial Presence Tax like pk asked? The number of days you were in the US in 2023, plus 1/3 of the days in 2022, plus 1/6 of the days of 2021. If that is over 183, you are still a Resident for 2023 as well.
Yes, if your 2022 tax return is incorrect, it can be amended.
TurboTax is NOT set up for residency issues like this, so in my opinion it is really in your best interest to go to a tax professional that is very experienced with Nonresident Aliens and Dual Status Aliens. There could be other factors to consider that a good tax professional can help you with.
