Meet with your school counselor or special education teacher to discuss your current IEP or 504 Plan. Make sure you are aware of your accommodations and know what you rely on and what you may be able to navigate without. Discuss how you can start adjusting to the support services that are likely to be available to you in college.
Begin developing self-advocacy and self-awareness skills and learn how to communicate your needs and preferences so that you are prepared for speaking with college disability offices and professors.
Practice independent skills, time-management and organization skills, to prepare you for living on your own on a campus!
Remember, the earlier you start preparing, the more time you'll have to find the right fit and support for you in college.