Just something to consider, did you try asking your son why he considered suicide?

People always have a genuine reason for behaving the way they behave. You can try to understand that reason, that's all you can really ever do. You can't change people. And the more you try to change people, the more they will resist.

I personally in my twenties now am more or less disconnected from my family. They only wanted the best for me, but also, living with them made me truly miserable and crippled me mentally and emotionally for most of my teenage years. Back then I know I felt suicidal because I always felt trapped in a web of expectations and pressures. I never felt like i had any personal space or freedom to be myself. I'll tell you one thing: the one question they never ask me is, "why?" They're never curious about how I think or what things mean to me. When they call, they ask me lots of questions, so many questions, what are you doing, what are you going to do, have you done this or that yet, etc. But they definitely never ask me why. Don't know if this is helpful at all but, just in my case, I can't tell you how many times I have wished they cared enough to be curious about that.