No. Unfortunately, once you transmit your return you cannot change it or get it back. You would have to wait until your return gets rejected or accepted. If rejected, you can make your changes or add the W-2 to your return.
If accepted, you would need to amend your return to correct or add the w-2 to your return. An amended return cannot be filed electronically but can be printed and filed by mail.
More information regarding amending a return can be found below.
https://ttlc.intuit.com/replies/3288565