UPDATE: I received request for fingerprints last night (Feb 4th), which I submitted this morning (Feb 5th). I was the only one who received the request, my spouse did not.
I used Canadian Fingerprinting Services; excellent choice for anyone who is in or near downtown Toronto. I was in and out in 10mins, with the confirmation that the prints had been sent to RCMP, and that the RCMP had cleared my background check and started the process to forward the information to IRCC.
Canadian Fingerprinting Services Inc.
2 College St #208, Toronto, ON M5G 1K3
(416) 625-6104
https://goo.gl/maps/kMCg7yeBafhJgoe69