Are you required to attend a flight training unit which is a designated learning institute with a COVID-19 readiness plan? These organisations are listed at
https://www.canada.ca/en/immigration...roved-dli.html
You do not require a Canadian PPL or foreign licence validation certificate in order to undertake the flight test or dual instruction for the Canadian CPL. Obviously a PPL or FLVC will be needed to complete any outstanding solo training requirements. You can apply for a foreign-based PPL without undergoing a PPL skill test. The FLVC will be administratively easier to obtain. You should be able to obtain it simply by visiting a Transport Canada regional office.
Ensure that on arrival in Canada you sit the ROC-A (restricted operator certificate with aeronautical qualification) exam and apply for the certificate at the earliest opportunity. You can alternatively use a US commercial radio operator licence (radio service code RR, not RL) if you are a US citizen. The RIC-21 study guide published by Industry Canada will prepare you for the ROC-A exam.
https://www.ic.gc.ca/eic/site/smt-gs...g/sf01397.html
Your IMC training should count towards the Canadian IR experience requirements. I expect you have already met the experience requirement in 421.30(4)(a)(ii)(B) of the Canadian aviation standards. Eight weeks sounds excessive.