You can't. You have to report all your income on the same tax return at the same time. If you filed the first W2 and it was accepted then you need to mail in an amended 1040X return to correct the first return and add the other W2 to it.
How to Amend
https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577
