Yes amending will stop the advance CTC while it takes 6 months or more to process.   If your ONLY thing that needed to change on the return was the unemployment then the IRS is doing that automatically for anyone eligible for more of a refund due to the exclusion ... they do NOT want amended returns for this item.

Not everyone will get more of a refund after the exclusion ... so you CAN  use the amendment program to see what the change will eventually be if any ... just do NOT file the 1040X. 

Ok. & how do I do that? 

To see how to amend your taxes, click here: 

Steps to amend in TurboTax

How to file amendment

I don’t wanna amend them but I wanna see if I’m getting a refund 

Yes ... use the amendment program to compute the change ... just do NOT mail or efile it. 

Thank you