The application is short and kinda straightforward, there aren't many documents required.
Typically, you'll need a proof of language, so pass a language test now if you don't already have one, and check the police certificate requirements, although I'm not sure if you can use one you got 9 months before the application.
Apart from that, if you filed your taxes every year you were in Canada and kept a logbook of your entries and exists from the country, you're already as ready as can be.
Thanks for your response. Can I use the IELTS test score that I used to get my PR around 2018? I'll also check the police verification requirements