Can I file 2 more w2s from this year and one from last year after I already filed just 1 from this year? If so how?

For both years, you will have to file amended returns to add the W2 forms that weren't reported originally. For your 2024 return, you must first wait until the initial return is completely processed. ‌When you are ready to amend your returns, remember that:

• You will have to use the same TurboTax account that you used for the original tax return.
• Once you begin your amendment, you'll see your original return. 
  • The refund calculator will start new at $0 and only reflect the changes in the refund or tax due
  • Only make changes to the areas of your return that need amending.
• You have three years from the date you filed your return or two years after you paid the tax due (whichever is later) to file an amendment

For more information on amending a return and steps on how to amend your return, see the TurboTax help articles below:

How to File an Amended Tax Return with the IRS

How do I amend my federal tax return for a prior year?