Applied for the spousal sponsorship (inland) on February 27, 2018. Got AIP and SA (DM on sponsor side) on November 28, 2018. Going to be 12 month in 2 days and they are still working on the background check. I have been in Canada since the age of 14 so wasnt required to send it from my home country. No dependants. Called cic and they just told me to wait but they dont know for how long , maybe 2 days or maybe 3 months more. If anybody is in the same situation or knows why it takes so long (3 months now) for the background check after AIP