UdeM’s steps for whole process: http://www.bei.umontreal.ca/bei/documents/Renouvellement_autorisation_ANGLAIS_Fev2016_revue_2.pdf

CAQ:

contact for CAQ people: 514 864-9191

https://www.quebec.ca/en/education/study-quebec/renewing-authorizations

The steps are the same as for your first application:

• Obtain a letter of admission from a designated educational institution in Québec;
• Complete your online application for temporary selection for studies;
• Submit the required documents online through the Arrima platform;
• Obtain a study permit from the federal government.

Here is where you apply for the new CAQ:

https://www.quebec.ca/en/education/study-quebec/temporary-selection-studies

After applying for the new CAQ, it should arrive in 20 days.

STUDY PERMIT:

If you apply before your permit expires, you can continue to study under the same conditions as your current study permit until we make a decision. This only applies as long as you stay in Canada.