Hi, I am also a March 6th applicant and my background check has been in process since August 30th. I haven't received any new updates after my medical exam was passed on Sept.
Today, however, I just received
Eligibility Passed Letter on MyCIC (for me, principal applicant). Nothing yet as far as eligibility for SA, no DM, no AIP yet. I know that new updates will come soon for you and all of us very soon! It is mentally and spiritually difficult to wait but step by step, the journey moves forward!