Congratulations! I’m also going through the EB2-NIW process. Because of the long wait for the PD, some things I described in my case have slightly changed. How deeply did the officer go into the substance of your case? Did they ask any questions related to it?
I know people who had their interviews in Warsaw, Poland, and the officers there were always very meticulous about what was written in the case itself. Some were even sent for reconsideration to USCIS (which in practice means a full denial, since the case won’t be reviewed in a positive way).
How are things with the officers in Montreal? Did they ask if you have a job offer? Even though it’s not required for EB2-NIW, that’s a question they often like to ask in Poland.
If possible, could you please share more details about how your EB2-NIW interview went? There are very few posts about this specific subcategory, and it would really help to understand what to expect