I never knew when mine went for final review. They did not send an email and I did not bother to call them. I just checked ecas one night and saw final decision. The next day I received the email to confirm presence in Canada, 2 days later, PR portal email. Five days after that came the almighty eCOPR.

For some people in the forum, between 2 to 8 weeks. Best of luck to your cousin.