Does he live with you or is he alone? Does he have a close friend or a partner who can check on him and keep you posted?
Are you able to speak to him daily- as I think they need daily contact to reassure them, and to let him know that you’re there if he needs your support.
I think you need to be taking care of yourself too, are you able to confide in someone close to you?
If not, perhaps try the Icarus trust group. Try not to think too far ahead, take each minute, hour , day at a time. Even a 5 minute meditation video on your phone, it clears the head a bit.
You may not be religious, but prayer has helped me through a lot of difficult days. Walking somewhere pretty helps me too.
Stay strong, positive thoughts and have hope
Lx