Cine, you seemed to be coming along so well at the beginning of the summer. I'm so sorry for you. LP hit things on the head when she discussed your changes and your H's reluctance to grow. LP is a very wise lady!
Taking the responsibility for an invalid FIL, I think is the problem. The strain is too much. If I read correctly, your H is the youngest and really valued dad. Having him in a hospice environment is working on him and that's the problem. The loss of his family infront of him, yet giving you the responsibility, for he can't/won't do it.
What't your FIL's diagnosis and life expectancy? Ok that's cold and caloused but very important. Do you have the patience, strength, desire to keep things glued together till FIL is gone? Will the turmoil at H's work effect you insurmountably? Your situation is not a good one.
You are a great person from what I know and IF you can get thru this, you may find "the guy you married" at the other end if he steps up to these challenges. I sence he's not realistically looking at his dad's health and his job.
Is there any other guy/counsellor HE could see?
Pity me that the heart is slow to learn
What the swift mind beholds at every turn.
Edna St. Vincent Millay