End of life.

I posted on here at Christmas about my dad. He was diagnosed suddenly in November with Bowel cancer. They operated and removed what they could and fitted a stoma. In December I was told he has six months left. This has now reduced to weeks. The cancer has spread further across his abdomen which was causing him to be sick. 
 

The cancer is now squashing the bowel, causing him to throw up whatever the stoma bag can't get rid of. He's now at home in a hospital bed. He hasn't eaten for three weeks. He has a tube inserted into his nose and into his stomach to drain off whatever the stoma can't. But he still continues to be sick. He has a syringe driver in place which is administering his anti sickness drug. But he has refused morphine. He says he isn't in any pain. He is sleeping majority of the time and he is talking in his sleep and hallucinating. He is still drinking water. He keeps saying he wants to die he's had enough. It's absolutely heart breaking. I'm not sure how long is left now. My mum thinks a few weeks. Any one else been in the same situation? Sending love.