Do I need to file I-212 and I-601 at the same time to the same place?

I agree with my colleagues.

I-212 and I-601 may be filed together. You will have to pay separate fees and these two forms may require different sets of evidence. Although I-212 is commonly referred to as a waiver, it is not exactly a waiver, but rather a request for permission to apply for admission. Please seek advice of an attorney to determine what kind of waiver(s) and how many you need before you submit anything.

No one I know would even attemp to do a competent I-601 Waiver pro se. It is like attempting to pull your teeth expertly by yourself. Retain a good counsel.