H3rmit literally gave you the best answer. I have autism and I face this situation at school all the time. I have two online classes which are English and a sociology course and I'm so glad that it isn't on campus. I don't do very well in an English class setting because of the metaphorical language used, group projects, etc. I am an A average student, but I'm slow processing and I need more time to do things. I have one class on campus, but I'm not worried. I probably won't make friends, but I will most likely have group partners since I understand this class subject very well and people will want to be my partner for my intelligence. I tend to keep to myself and listen more than speak. I never put myself on the social spotlight, but I do show my colours when being questioned during class.

Try to follow h3rmit's suggestions since it's great advice. Also, cognitive behavioral therapy helps with autism. By reading what you said, it sounds like you have mild autism. I would recommend getting tested for it; the testing isn't hard and your insurance should cover it.