Respect for your stoicism . Can't imagine how your situation must feel.
I have read that dreams are actually the brain's way of dealing, processing and filing away the day's positive and negative emotions, thoughts, feelings, actions. Hence the saying 'things will be better in the morning'. Potentially, as this further decrease in your hearing has been fairly recent, your dreams are just reflecting your heightened awareness of it. Maybe in time your dream hearing will return as you adjust. Good luck.