See this TurboTax support FAQ for amending a state tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/need-amend-state-return/L3hGF...
A Form 1098-T is entered in the federal section of the TurboTax program. The tax date entered on the federal tax return will flow to the state tax return.
To enter, edit or delete Education Expenses -
Click on Federal Taxes (Personal using Home and Business)
Click on Deductions and Credits
Click on I'll choose what I work on (if shown)
Scroll down to Education
On Expenses and Scholarships (Form 1098-T), click on the start or update button