You should reply advising IRCC about the change in your status and they will let you know the next steps and advise on which documents are required. Depending on what they instruct you to do, it may cause a delay in your landing as they will need to process the documents for your spouse (if requested). How long have you been married, my reason for asking is because IRCC explicitly states that we must notify them immediately of any change in your status (married, birth of kids, change in address etc).
I would suggest you start making plans to complete a medical and PCC for your spouse in the mean time so you’re ready when they request them. (Just a suggestion and not advice)