I really appreciate the precise responses.1. Yes, your wife's permit will be valid until it's expiry, but she won't be able to renew it afterwards (https://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=1522&top=17).
2. Yes, you can as long as it's less than 150 between the time you leave your current DLI and starting full-time studies at your new one. Also, you need to have an admission offer from the new DLI and have committed to attending by paying part tuition (https://www.canada.ca/en/immigratio...es/study-canada/work/work-off-campus.html#new).
-If she takes a new 2 years study permit, is it possible for her to apply for PGWP?
-I am studying in QC, and I have a CAQ for my Ph.D. If I change my program to college, is it mandatory to request a new CAQ? if yes, what happens to the previous CAQ if my new request refues? Because it is widely said that the officers will reject most of CAQs like mine? a lawyer told me I should convince them why I want to change my program.
again, thank you.