The mere addition of RQ communication between the client and IRCC will add at least a couple weeks to the process, without counting the time needed for an officer to analyse the file(if these RQs are put in a seperate queue, the delay is "appreciable").
Mind you, there are several forms been used these days and some are simpler to handle and process. Do you mind providing some more information about the form you got?
However, if you take a look at the timeline spreadsheets, you'd notice that most of the new applications involving an RQ are still being completed around the one year timeframe or less.