Hi, Kath, and welcome to the forum. As has been said, you will find a lot of information and support here, which you know since you've been reading the posts before deciding to post yourself. Have you also read the info in the folder at the top of the page entitled Hepatitis Resources? It will give you an idea of what to expect.
This disease is very individualistic. Everyone is different. I was diagnosed with hep C in '93 and had trouble with the interferon. I've now had the disease for 41 years. In '05, I was diagnosed with liver cancer and thought I was going to die then...but I'm still here. In '07, the right lobe of my liver was removed...due to the cancer. I'd had a biopsy in '93 which showed no cirrhosis. In '07, I did have cirrhosis. So far my only symptom is the fatigue. I could sleep 23 hours a day if I allowed myself. But I set my alarm and force myself to get up and moving. I wear out easily, though. I've not (yet) had encephalopathy, which it does sound like your significant other might have. Is he on Lactulose? Is he still seeing a hepatologist? Even though he can't tolerate treatment and was a non-responder, he should still be followed by a liver specialist. A hepatologist knows what to look for in terms of progression. There is also a new treatment on the horizon (should be available the first half of next year) which only requires being on it for 24 weeks. It adds a 3rd drug to the combo and it clears the virus in 75% of those with genotypes 1a and 1b (most of the patients in the US.)
The main thing we say to caregivers is to make time for yourself. You sound close to burnout now. And no wonder--you're working long hours and keeping up the house and caring for him. Doesn't leave much time for YOU. If it's possible to get someone to come in and stay with him once in awhile so you can get out and visit with friends, go to a movie, or even take a long walk in the evening--it would help you.
Meanwhile, please continue to check in here and let us know how you and he are doing. If you have any questions, someone should be able to answer...except for the one that no one can answer--how long does he have left? Some go very quickly while others linger on for years. There's just no way to know.
Hugs,
Connie