I feel enormously terrible about how the conversation went and, like, next time I know not to ask him to talk about his fears, but I really think this is one of those times where I figure out what to do too late.
My SIL has been telling me that he's rarely lucid and I got those few moments and lead to him wishing for death. And, like, it's not like his doom loops are novel. I should have seen this coming.