State tax filing

If you were in the US for only a month in 2018, you are a nonresident for tax purposes.

TurboTax does not support nonresident returns.

However we have a partnership with Sprintax offering a nonresident tax filing solution to our TurboTax customers.

Visit the TurboTax/Sprintax site for more info or to get started.

If you have already filed your return, you must amend your returns. You will need to wait until your returns are accepted and processed and you have received your refunds before you can amend your return.

If you have not filed your returns, you can clear your return and then go to the Sprintax site to prepare a nonresident return.

https://ttlc.intuit.com/replies/7276605

Please see the following for more information.   US Tax Guide for Aliens 

Publication 519