I accidentally put my birthdate four my daughter on my return

Yes, you can correct that. If you have already e-filed your tax return, you will need to wait until your return is rejected before you make your correction. 

Here's how to change it:

1. Sign in to your TurboTax account.
2. Select My Info, or if your return has been rejected, select Fix my return, then My info.
3. Scroll down until you see your dependent's name.
4. Select Edit. 
5. You can correct the birth date here. Continue through the end of the section.
6. If your return was rejected, select Review. Keep going until you see Continue to file. 
7. Keep going until you resubmit your tax return.