Not CPC-M, but we got an additional document request from CPC-Sydney on 26th April. They needed some more documents to verify my employment (dunno why, I included everything that was required with our application). The 30 day deadline on 26th May came and went, and we still hadn't seen any movement on our application. It wasn't until Friday (21st June) that my husband finally got the biometrics request, and I got the SA today. So took them more like 2 months to actually get round to reviewing and approving our additional docs. So, I know it sucks hard, but hold on for a few more weeks!