Passport expiry

Hi ,

I got aopr on March 7 th 2018 , my passport is expiring in April 2019 , do you think I should renew it and will it be a problem if I don’t renew it before the Stamping of my passport happens , Or should I wait for Copr and then renew it after reaching Canada . If I renew it now will it delay my copr in any way . And how do I inform cic that I have renewed my passport . Plz guide me I am confused .

Guys plz help . Need to urgently know