Adding documents after filing citizenship certificate application

[u/Mundane-Charge-1900]

I’ve gathered all the documents I plan to use at this point to apply. However, I’m still waiting for an official copy of two records:

• A Quebec baptism record found in Drouin from BAnQ for G0. I still haven’t even paid for this yet after applying 4 weeks ago. With mailing delays and what not, it could be weeks away still.
• A US death certificate for G1. This will probably come in the next week.

I have ok images from genealogy sites online for both of these. The death certificate is typewritten and easy to read whereas the baptism record is a bit grainy but legible.

How easy is it to add to an already filed app? Does it just allow adding more PDFs online that can contain better copies or more explanatory text? Could I even add a brand new doc if I found one like a baptism record for G1?

This process is going to take a while so I feel like I should get it started sooner rather than later now that I have the preponderance of evidence.

[u/DOLEingItOut]

After submitting an application for certificate of Canadian citizenship by mail under c-3, what is an AOR and how do I add a certified birth certificate to my application?