I am also in similar situation as yours. Work permit extension with a CSQ is easy & fast because you dont need to deal with Quebec's MIDI anymore. You get an employment offer number generated thru your employer online and apply for Federal PR, goto the border along with CSQ, Employer offer number and Federal application receipt and get the work permit extended. OR you can do online too.
I havent done it myself, but there are some posts in this forum discussing that.
Now assuming the worst, because MIDI is delaying inland CSQ applicants now. Suppose we dont get CSQ in time and need to extend work permit without CSQ, I am not sure how to go about it.
Is there anyone who have done this ? that is, Work permit extension without a CSQ ?