Hello,
Yes, you can amend (make changes to) your filed return. You can amend e-filed returns if they've been accepted, though if your e-file is still pending, you won't be able to make changes until the IRS either accepts or rejects it. Paper-filed returns may be amended once they've been mailed.
For detailed info on how, check out this article: https://ttlc.intuit.com/community/amending/help/how-to-amend-change-or-correct-a-return-you-already-...
