Hey Symmetry!
My wife was pregnant during the application process. We received requests for medical exams. The doctor advised that an X-ray isnt good during pregnancy. He noted it on the medical report. 2 weeks after the birth of the baby, we received a mail from CIC NY asking for 4 things:
1. The pending Xray for my wife.
2. Medical results for our newborn baby
3. Nomination addition of our baby - I called up AINP in Alberta and they added him to the nomination and let the people in CIC-NY know about it.
4. A form (dont remember which) for adding my newborn baby as a dependent.
I did all this - and it added a good 3 months for them to move to the Passport Request stage.
Hope this helps,
G luk to you and your family.
-R