On going battle with cancer

My father John hall age 59. has on going fight with cancer , 2008 was along hard yard , chemo and radiation and major throat surgery and on going test . We are now 2018 and my father is on the other affect of chemo and radiation treatment. December lastyear was amitted in to hdu , we thought that was it , he pulled through , he is now nill by mounth , tube feed through stomach, can't eat, drink nill by mouth 24, 7 witch has taken a huge impact of all is at family events and own health as, since December 2017 my father has on going aspiration pneumonia ,used to weigh 100kg now weighs 52 kg. We all scared of winter time. He works full time when he can do to health . We would love to see dad less stressed and enjoy his quantity of life instead of fritting he can't have a day off. As used all sick and annual leave from being in and out of hospital.