Hi Petalma,
I can't really answer your questions, but I did want to offer you support as you help your son through this difficult time in his life. As the mother of two kids who have struggled with anxiety and depression I understand what you are going through. Many times it takes many med changes and adjustments to find the right combinations but trust me they will. My son just started his first year of college and my daughter started her senior year of high school.
Good luck to you