That's what the Embassy site says. The Add must be 1 month old. Need to give Add in India too. you need both Add Original cutting with date and News paper Name. Do more research before you submit the Application.
for BLS:
https://www.blsindia-canada.com/name_chan.php
Information from the above link ..you will find the same under requirements.
Documents Required:
- Duly filled in miscellaneous application form.
- Present passport and a photocopy of the first 2 pages, last 2 pages and all the observation pages.
- For Minor Applicants, both parents’ signatures are required on the application form along with a photocopy of both parents’ passports
- 2 photographs - Color – against a light background showing full frontal view of the face.(35mm x 35mm)
- Original Valid PR Card with one set of photocopies (both sides), where applicant is not a PR, current valid immigration documents (e.g. Study permit, Work permit etc.,) in original with a photocopy thereof is to be submitted
- Need the original cutting of the advertisement published in two English newspapers one in local newspaper, one in India both showing the date and the name of the newspaper advertised in. The advertisement should be 1 month old at the time of submission of the application.
- Name change affidavit from the Notary Public stating the previous name and the current name.
you can search info on CGI website as well
https://www.cgitoronto.gov.in/page/general-info-passport/
Thank you and wish you good Luck