Christi, once you've submitted your return electronically, you can't make any changes.
Here's what to watch for now:
Wait to see whether your return is accepted or rejected by the IRS. If the IRS rejects your return as you filed it, you can make ANY corrections (including adding forms you overlooked) before re-submitting your return. However, if the IRS accepts your return, you will need to amend the return. Amending through TurboTax won't be available until mid-February. Additionally, amended returns can't be e-filed. They must be printed and mailed. I'll give you this linked info (below) so that you'll have it in the event you need to amend.
https://ttlc.intuit.com/replies/5114064
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
