We would basically need your transcript to answer that question, and you probably shouldn't share that with anonymous people.

Do you have a student advisor? They would be able to give you the best guidance as to how to go about this. If you take x amount of classes and do significantly better, it is possible the university or school would see the change and go by that rather than your GPA. It would depend on the school and program.

So, I'm going to suggest you speak to some kind of advisor.

Good luck. It's great that you're trying to get back into it.