I thought I could add more w-2s after filing 1 w-2 but just realized I can’t. So I have to admends my taxes and it says I can’t because original filing is unknown

[VolvoGirl]

Right you have to file all your income on the same tax return.  You should not amend until the first return has fully processed and you get the first refund or your tax due payment has cleared.  

How to Amend this year

https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-federal-tax-return-curr...