If you have not filed the tax return, then you do not amend the return. Amending a tax return can only be accomplished after the original tax return has been filed and accepted by the IRS or State.
If you have something that needs to be changed, just go to the section of the TurboTax program where the change needs to be made.
See this TurboTax support FAQ for using Live Assist with a Tax Expert - https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-setup/connect-tax-expert-turbota...
