Dear godlygal @godlygal, Welcome to Connect. As I read your post, I can see that you care very deeply for your friend. The cirrhosis and symptoms that you describe are miserable for him as wall as for you. And with the complicating factor of mom's diagnosis, it is little wonder that you feel frightened and stressed.
Who is treating your friend for the cirrhosis? What kind of advice, counseling, or help with alcohol addiction is being offered? You must bring up these concerns to the provider because your friend has to assume his share of the responsibility for his situation. And you should not be expected know the answers.

Right now, I am concerned about you, as his caregiver. Caregivers of all ages fall into the caregiving role for all sorts of reasons. And from what I have read, none of them is ever prepared. I want to invite you to the Caregiver Discussion Group. This is a discussion group where you can read about other people who have been faced with situations where they, too, asked, "How do I handle this?" I know that if you post your question there, you will find that you are not alone.
Meet fellow Caregivers - Introduce yourself
https://connect.mayoclinic.org/discussion/meet-fellow-caregivers-introduce-yourself/