I need to file an amended return for my education credit and have a change to a lifetime education credit.

An amended return, Form 1040-X, can only be printed and mailed to the IRS if the original tax return was not e-filed. The IRS will take up to 16 weeks or longer to process an amended tax return.

Before starting to amend the tax return, wait for the tax refund to be received or the taxes due to be paid and processed by the IRS.

See this TurboTax support FAQ on amending a tax return originally completed and filed using the 2020 TurboTax editions - https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-return/01/27439

Why do you think you need to amend?  TurboTax will usually select the best credit that you qualify for. 

Did you receive an IRS letter?

Are you the parent or the student?