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I have posted this question last month. Did not receive a single reply.
Just bump that one. No need to wait a month, no need to spam multiple threads.

And while you're waiting: read other threads and research. This has been answered dozens of times. Figure it out.
 
Oh yeah. I already have searched multiple threads. Couldn't find it, if you could then let me know. I appreciate it.

Not every case is identical. Generally if you have new Canadian-issued ID (esp photo ID) in a 'new' name, you can get IRCC to accept it.

Not always. This is basically a 'customary' (common law) change of name which most provinces will accept, but there are no clear or specific or consistent rules. It works best/most easily when someone is using a name that is clearly and obviously a derivation of their 'documented' legal name, eg shortened form of a name, dropping a middle name, using a middle name, sometimes slight spelling variations.

This /tends to/ include eg Indian names where all was as given name or no given name or dropping some honorific/extra names.

I can't tell what case yours is. If you changed it in your original (home country) passport, easier.

One other point of importance: if you go the 'customary' name change route (also the legal one), you really need to be consistent and change *everything* and use that one name consistently. Some minor exceptions like if you use one name for public work (like a stage name) or a slightly different 'social' name (primarily when couples retain their unmarried names but use a combined or single one as a couple solely for social/family matters).

OR: if you want to do it the infallible but slower way, search change of name in your province. Takes 2-6 months (usually). This will work.

[Caveat that Quebec is anywhere from a little bit to completely different for some civil matters - incl name changes.]