My daughter is a junior. I just put her on the 504 plan. It’s something that is initiated by parents. We go through the school counselor. Her teachers are aware of the ADHD. She gets extra time for tests and assignments. I have to say it’s really helpful. Her counselor did say that in college, it is also available. But it is the college student that starts the process on that level. Not the parents. In your case, I recommend that you talk to your school counselor to see what can be put in place to help you. It’s never too late to put steps in place that will help you.