If you already applied for PR and filled out a whole bunch of forms already and sent photos and you have your COPR, I am saying you do not have to fill out a bunch more forms in order to apply for a PR card because it is an automatic part of the process and they will use the photos you already provided unless there is some problem with them. However, as this is a small child who has most likely changed in appearance since you sent his photo for the PR application, you may want to get new photos taken and see if they will accept them when you land.