+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
No, I don't have a US Green Card, I am an Indian citizen.

Below is mentioned in my visa correspondence letter:

Your application to study in Canada has been approved. A permit authorizing your studies will be issued to you on your arrival to Canada following an examination by an officer of the Canada Border Services Agency, subject to your compliance with the requirements of the Immigration and Refugee Protection Act and its Regulations. The officer will ask to see this letter, your passport and may request to see your supporting documents, such as the letter of acceptance from your educational institution. Do not pack these or other valuable papers in your checked luggage. You can find out more about which documents you will need to bring with you by visiting xyz site.

You must seek entry to Canada to obtain your study permit by March 2021.

Ok, so that's fine. The officer will give you the study permit, it will be valid till the end of your course + 90 days, and you can renew your TRV if you need to travel between Mar-sep 2021.

It's all here -> https://www.canada.ca/en/immigration-refugees-citizenship/services/study-canada/study-permit.html