Hey all. I am in the same boat and I received the standard IRCC reply to my web form requesting to update one of the forms (background). I don't have my AOR yet.
I think as long as you have those three mandatory documents submitted, you don't need to stress too much. If you make mistakes on other documents, IRCC may reach out for additional info and LOE.
However, I think it's important to submit a webform any way as it shows you've tried your best to correct any mistake and that will be your solid proof in the future.
I remember the youtube lawyer said the point of TR to PR is to admit as many new comers as possible, if IRCC is being too penalizing to us - it defeats the purpose of this program.
Let's stay hopeful and finger crossed for everyone.