I am very sorry to hear that your brother is suffering so much and understand that you are very worried. Did you read the answers my colleague and me gave in your earlier opened thread?
I am afraid that we can not provide much more advice in regard to his situation on this platform. Again, I would highly recommend that he is getting some individual support in a counseling office. Only there it is possible to assess his situation and condition in a holistic way to find the best help.
All the best for you and your brother,