So here is what I did:
I replied back to Delhi Immigration(from where I had received the PPR mail) attaching my marriage certificate and few marriage photos. I had clearly mentioned my UCI number, COPR issue date, expiry date, marriage date, etc etc. I CC-ed
CPC-CTD-Ottawa@cic.gc.ca.
I received an email(except the auto-generated ones) after 2 follow-ups almost after a month of 1st intimation. They had asked me to submit majorly IMM8 form, Schedule A, Additional family details, Birth certificate of my spouse, Indian PCC for me and my spouse, PCCs of any other country if applicable, Passport scans, Document replacement fee(30 CAD) receipt, RPRF fees(1040 CAD) receipt for my husband, RPRF for me(dont know why because I had already paid. Not paying again, have just mentioned in a LOE).
Have not been yet asked about any proof of relationship or medicals or fund details(little skeptical here why).
Also, I had to go to VFS office to submit my passport and COPR for visa cancellation. Tip: Carry a printout of the mail thread of the PR email to which you must have intimated about your marriage, along with the reply from Delhi immigration, where they will be asking you to submit your passport to VFS office.
Trust me, this scenario is rarer than you think, so not every authority is quite familiar. Anyways, you can only start doing anything of the above, only once you get a reply from Immigration.
Whether your dependent is an accompanying one or not will be a pointer in one of the above forms.
My husband cannot be away from his family this year, so our plan is for him to accompany me, to land in Toronto, get our PRs activated, stay with me for 2 weeks and come back. Later I will receive both of our PRs, post him his to India, which he can later use to re-enter Canada in 2019.
I dont know the details of a non-accompanying spouse, but to reduce the complication(like there is not enough: getting married after COPR and all that), I would suggest anyone to accompany the primary applicant for first time landing.
Hope the information helps. I will keep everyone posted on what happens next in our story.