fear

My 82 year old Dad was diagnosed with prostate cancer in March whilst in hospital with congestive heart failure. He had been under urology for over 15 years with an enlarged prostate and he had a turp operation done in february 2017 where they took some biopsies it took 7 weeks to get the results of the biopsies and then we only got them after him having a chest xray and shadows were seen on his lungs so we chased up the results from the biopsies to find out  that  he had prostate cancer with score 4+4 He doesn't know how serious is illness is  we are trying to protect him he thinks he will be fine with the 3 monthly hormone injection he has and that this hormone injection will stop it getting any worse. He had a bone scan 6 weeks  ago and the cancer is in his the whole spine ,ribs ,shoulders .elbows ,feet.I love my Dad dearly and don't  want him to be worried so i keep saying that the hormone treatment will keep it at bay but i don't know if this is true i was told when he was first diagnosed  that the cancer was not curable but was treatable I now haven't had an opportunity to ask if this still is the case.  He is having a lot of problems with pain so he is now on morphine and his appetite is up and down along with the nausea  and dizziness he wants to exercise and says he needs to get fit so pushes himself into walking  laps of the stores although he is wobbly and tired. Im worried sick incase he falls He also am afraid of watching my Dad deteriorate i know he can not go on forever but i'm so scared of what lies ahead any help and advice about what we are likely to face would help me greatly i really am scared to see him suffer and waste away