Dealing with ADHD and Poor Academic Performance

Currently in my fourth year in college even though I am technically a freshman based on the amount of credits I have (change of career). For all my academic life (from kindergarten to now) I’ve had a poor academic performance that has negatively impacted my GPA and grades from various courses. Even as IEPs have helped (educational plan for those with an intellectual disability), both my family and myself have neglected to look further into my lifelong inability to concentrate, most thanks to cultural stigma. Recently, I’ve received proper behavioral and medical interventions for my ADHD and it has shot up my usual GPA of 2.3-2.6 to a 3.7 this semester! (First semester to ever receive an ‘A’ on a course) So, my question(s): 1. Does anyone know if there’s a possibility to wipe off bad grades on their school transcript if a diagnosis like ADHD was not recognized by either yourself or the school? Is retaking the only way to go? 2. To those who were diagnosed late into their academic career, what has your experience been like?