I guess it all depends on case officer . mine is too lazy to touch the file . last update was 2nd September , my test got updated after one months.My friend is July applicant, applied with us, we did our oath and they are still waiting..
It is weird, but IRCC do not follow any particular order and Winnipeg office is not the most quickest and efficient.
Hopefully you will get it soon.
two of my frds had their oath, one applied two months before and one did six month later.