If I amended my 2020 taxes and received an updated 1040x and a notice from the IRS to send turbotax a copy, do I need to amend my return again?

[Rmknight]

They first sent me a notice saying it had been adjusted and I would be receiving a check, then 3 weeks later came the notice that discrepancies were found in my original 1040x, provided an updated one and simply told me to "send a copy" to the preparer if I used one.

[Critter-3]

You did not "use a tax pro" ... you used a DIY program so you have no one to send anything to ... TT doesn't care.  What you could/should do is amend the return a second time to either update your account AND/OR verify what the IRS did makes sense.    Remember you will need the AGI from the Original return to efile next year ... make sure you have that number in a safe place. 

[fanfare]

@Rmknight 

There is nothing for you to do.

The Form 1040-X (as adjusted by IRS) becomes your new tax return.

Keep it with your other important tax records.