((((Isarenever)))) first, i think it is great that you reached out here. There are lots of tertific, supportive people. And also congratulations to your H for following his dreams to attend law school!
Do you have a T that you can speak with on a regular basis to discuss your fears and the transitions you are anticipating?
I understand your concerns regarding your challenges as well as your relationship and your fears are valid. Change is hard for many of us.
It sounds as if you love, respect and care for each other very much.
Speaking from experience, law school is very demanding and definitely tests any relationship. Many law schools even provide couples counseling to help get through some of the rough times / changes and challenges. You can do it! You sound very strong and caring.
Probably, the best thing to do now is to start focusing on these fears and concerns with your T so s/he can help give you the tools for success
Best wishes to you and your family...
Rose