Unfortunately, you do have an option to leave if you want to maintain your status, chances are slim unless you enter back through US on non commercial vehicle on a good day, if your parents can be taken care by any other member of your family then you can try to have them look after by someone else, but take the decision that you must not regret in future.
Are you from a passport exempt country?
Not necessarily Canada become paradise for you if decided to stay here. Some people left their high earning jobs, sold their properties, left aging parents alone etc. But when lived here, they got divorced, never able to get back to their profession, their children become drug n Alcohol addict and some left them, which you expect rare to be happened when you are at your own ground.
Calculate and then decide what can be best for you and then never regret.
regards