My Boyfriend Has Prostate Cancer,he Gets Chemo Every 21 Days.

My boyfriend has prostate cancer,he gets chemo every 21 days. He has his good days and bad days,I went with him to see is oncologist and asked what stage is he in. Told to doctor whats going on,they told us both. Andy your dying you have stage 4 cancer. My boy friend in polish and under stands English enough. He went from about 220 6'4 to about 180. He's skin and bones,he is being treated at a county hospital,there taking good care of him,but he's in a rehab hospice center. He doesn't want to eat I'm with almost every day,try to feed him soups cause I know he likes it,but nothing. Please,he thinks he's going back to work. He thinks he is getting better,but all he does is sleep. What can I do? I have multiple sclerosis and I'm having a hard time.