It is possible, however you will need to amend your return once it is processed and add the W-2 that you forgot.
You
can amend any changes once the IRS has accepted your return. If they reject
your return, then you will have the opportunity to make any necessary
corrections, add anything that was left off, and resubmit your return. The
instructions to amend are below:
https://ttlc.intuit.com/replies/3288565
