When you first log in to your TurboTax account do you see two different tax returns for 2024? Or have you accidentally made changes to the one that you already submitted? If you see two tax returns there you should be able to delete the incomplete one from the home screen. If you only see one then somehow changes have been made to the one that you submitted. As long as you don't submit the changed return it should be fine, though.
@PEGOTTER511