Some trials do come dangerously close to breaking our spirit, but somehow, through it all, we find that last remnant of strength which makes it possible to go on, even though we feel as though we are hanging from a frayed rope, clinging for our very lives.
I can only imagine what you are going through. Yet, hang on. Sometimes acceptance of an impossible situation brings a sense of peace. Right now there is nothing you can do about it. So here comes the fine balance. Accept it, let it go, and yet be there for him in all the ways that you can. Let love replace all fear, even anger, and address it from this perspective. I can only imagine how wearing this is on you. Rest when you need to, but please make sure that you nurture yourself. As you gain strength and peace of mind, you will be able to help Alex in ways that you may not even be aware. There will be an end to this storm, don't let it batter you down.