I think keeping a mood chart is a good start. I use to track my sleep and just my overall mood, up down or irritated , angry etc ....Old school on paper and after a while my T and I watching it we I could see a pattern start to show.
I have a great T for 8 years now but I moved back to Florida for a year and all that I saw were just a useless joke so I gave up. We moved back sooner than expected thankfully.
Im back with my old T. Him and I are both goal oriented and see a problem and work on it to fix or resolve. Of course with Bipolar I have recurring issues with self esteem , self worth and self loathing. So we focus on what I need at any given time.
I know you have enormous stress in your life and have been for a long time , you has stuck by your guy much longer than most people would have. Maybe work with a T about coping when he does pass on .. start building a big tool box of coping skills and hopefully they will help you across the board.
I’m so grateful for finding PC Years ago, its literally been a lifesaver. But I know I need someone I can be face to face with and say anything I need to say and there be no judgement.