You do not have a choice, you MUST add her to your application right away and before travelling to Canada. Even if you submitted your passport now, the first thing you would have to do (written clearly on all) is advise them when your family configuration changes. And repeat, before travelling.
This is not a family psonsorship case, you should look in the various other sub-forums for your applicaiton type about adding a spouse. It is not a rare case, I understand it will take several extra months (four to 12? don't know, I don't follow).
So it mean there are no other choice than add her to the application right ?? So I have to wait for the IRCC to give an update regarding my status change ?
I have submitted webforms multiple times regading my changes.. and still no updates.