To Pjiang,Xiaobaitu,and other experts(biometrics appt)

I filed EAD application a week ago. And now I got a biometrics appointment notices. But my biometrics (2nd time) was taken last May for pending I485. It should be valid still. I called CIS but couldn't get to the right place. I don't want to take the biometrics again if possible. I wonder if I can get it cancelled. Thank you for your suggestion first.