Can I prepare for calculus in a month?

So I am in a slightly tricky situation. I just figured out my high school’s math curriculum is incredibly lacking and I am behind. Just for some context, I am an upcoming senior and each year, we are given one integrated math.

I only realized halfway through my junior year that all throughout high-school, a bit of right angle trig was covered, some algebra one, and a bit of algebra 2.

I have been using khan academy to study and have gotten 17% through algebra 2 in a few days, my course test score aligning with the completion percentage pretty accurately.

Since I was planning to take my school’s offered calculus, I am wondering if I am too far behind for comfortability.