Son with rare epilepsy. Wants therapy dog to help.

My son Noah suffers from a rare form of epilepsy called (LGS)Lennox gustaut syndrom. He has daily seizures. Absence, drop and grand mal. His dream is to own a therapy dog. He is told no more then yes for safety reasons. Meds haven't had much effect. Noah is 14 and just wants to be a  normal 14 year old. I'm a single dad who barely gets buy... I'f not for the help of my parents.  I don't know what tomorrow brings but I can hope his life will be normal. Just take life one day at a time and hope his life gets better.. We are taking the next step which is vego nerve stimulator. Then epidiolex. CBD oil.