The IRS will start processing returns on Feb 12. Until then TurboTax will hold your pending e-filed return. Pending returns can not be changed. If the return is accepted you will get an email. If the return is rejected the e-mail will tell you what to correct and you can make changes before
e-filing again
.
Amend to change an accepted retur
n. Instructions below
.
https://ttlc.intuit.com/community/amending/help/how-to-amend-change-or-correct-a-return-you-already-filed/00/25588