Yes I am preparing for worst I have 2 foreigners kids and 2 canadian born but they don't care even you have canadian kids if the officers don't like you and if officer in a bad mood he can refuse no one can ask him questions as you can see the guy have very strong case and its refused some have very week case and gets approved its means its depend on officers( just for joke if officer fight day before with his wife or her husband he she can refused you with no reason its depand on mood)
relax ! they will not remove you directly!
don't forget that you can always apply for PRRA to save time.
you still have solutions and appeals..
good luck, and don't forget that you are an essential worker , it will help you a lot in your application