I've had this post from @lahvista open in my browser for a while but haven't quite got to it yet. It's the first in a series of 3 or 4, about her struggles with wanting to end it all, before she got some help. It might be something worth you having a read of yourself. Then if there's anything helpful for him, you can mention it when and if the time is right.
https://steemit.com/suicide/@lahvista/suicide-is-an-option-part-one-intro
xx