Conditional offer

Hi
I have a conditional offer from western. I am already having an average required for the conditional offer. I have enough high school credits and graduated.

Now just for a safety , i enrolled in a grade 12 physics course over online school which i am unable to finish and eventually it may lead me to fail my course.

My question, will western look this and revoke my offer or they would not care as it is not part of my prerequisite or Top5.

Has anyone had experience in this kind of situation