Lost / Delayed Lettermail

Hi! I am waiting for a very important lettermail sent from Sydney, NS to Montreal, QC (my permanent residence card). It was sent on February 26th but until today (March 12th) I haven’t received it.

I read some posts a few days ago about how Montreal depot is very busy. Not sure if this is still the case. Is there anything I could do to get my mail as I’m afraid it’s lost. It’s a normal lettermail without tracking though.

Thanks in advance!