New Diagnosis - 7 year old

Hi everyone. I am new here - literally created a Reddit account a few minutes ago specifically for the purpose of following this community and connecting with people with Crohn's and parents of children with Crohn's. My 7 year old son was diagnosed with Crohn's about a month ago. His case is "severe" and we are starting Remicade this week. As a parent, I am terrified, but I know he needs treatment and the steroids are not working so a biologic is the next step. In addition to the physical toll this has taken on him, he is also not doing well mentally or emotionally. He is filled with rage and doesn't understand WHY this is happening to HIM. We've had a few therapy sessions, but he is struggling with his feelings. He is so scared he will have an accident in public or at school that he does not want to leave the house. He says things that would break your heart, about not wanting to be alive, because of this. He desperately needs a community of kids who understand what he is going through. Any guidance would be very much appreciated as we start this journey. Thank you <3