PLEASE HELP. I've tried everything I can think of and I don't know what to do. Every time I offer a possible solution he rejects it.

My friend (15 year old male) has had severe anxiety that makes him depressed and anti social his whole life but it comes and goes. Well about 6+ months ago it came, but it never went, and it’s only gotten worse. I’ve made it clear that I will always be there for him no matter what. His parents have him on remedies and will do everything they can to avoid resulting to medication. Today my friend told me that he “can’t take it anymore” and that he wants to die. I’m staying by his side and talking to him through text but I’m genuinely worried. He has never shown any suicidal thoughts or actions and I don’t think he would be one to kill him self, but I don’t know what could happen. He said that his parents know what needs to be done to help but they won’t do it. I am very familiar with his parents and I know they have good intentions but they are not helping the way they think they are. My friend said that it would be best if they pulled him out of school and put him in online classes but they refuse to do it. I am considering calling a hotline but I would like to try to handle this with him first. Please if anyone has any suggestions as to what I should do, please tell me.