Sounds like you have tried everything and the only thing now is to try and protect you?
Will you stand by him if he is sent down? Do you think if he is it may give you time on your own to think more clearly about what you want and need?
Maybe with all the chemical confusion he also needs time alone to tap in to his real feelings if he has any left.
Time apart may be the only way to salvage your marriage if there is anything left and also for you to regain your strengh and sense of self?