I don't think you have any reason to worry. Since your eligibility and criminality are passed, security ( although important) shouldn't take that long typically. People whose security didn't start had their files approved in a week. Based on your AOR date, it is possible your file may complete security within this month.
Since your visa office is Ottawa, you may even receive PPR sooner. This is of course speculation as most of us who are waiting for our PPRs have our applications in Sydney CIO, which is notorious for delays.
These are my 2 cents. Plz take it with a grain of salt. Someone who has more insight in to the process can give you their detailed inputs.