Mine's been in IP & no test invite yet since Feb.20th. But mine's a Regina-assigned file, and I think that things will move faster for you if you're a Saskatoon-assigned file.
It isn't IRCC/Saskatoon's fault that CSIS is taking so so long to get around to doing/completing applicants' security background checks at the moment.
It's somewhat ironic that Ralph Goodale (MP from Regina) is the federal minister in-charge of CSIS at the moment.