Yes, you may have to wait to file your Ohio tax return since not all of the Ohio forms are available yet. After you've worked on your Ohio taxes, click Review (upper right) to see the status of the Ohio tax forms. You can click Email me when the forms are ready so you'll know when to come back and complete your Ohio tax return. (Click the screenshot below for reference.)
The FAQ below shows when forms will be ready for the different states.
State Forms Availability Table for TurboTax Individual (Personal) Tax Products https://ttlc.intuit.com/replies/3319879