Yeah, so disappointed by that, but I guess our officer is just being more strict than some of the others. At this point I'm wondering how much longer the proof for cohabitation request will add to the application. Weeks? Months?Because of the request for additional documents, your timeline is likely going to be a bit longer to allow time for the officer to review what you send. Once that happens, it won’t be long before you get AIP and DM!
I am also wondering why DM would be delayed for the sponsor in this case.