Stage 4 cancer help!

My son was diagnosed with NSCLC non small cell lung cancer in August of 2017 things seemed hopeful he never missed a doctor appointment he went through chemo this made him so sick and tired sleeping a lot not eating much of anything an then started radiation it was painful seeing my son this way the pain spread through the family as we noticed things were only getting worse his hair began to fall out he began to see his abilities getting worse not being able to walk on his own or hold his phone long enough to read something as simple as a message before the phone would fall. Now he is living with me. He can not do anything now with out help from one of his family members. This was so unexpected and we never planned we would be doing this but we are needing help with a lot. Any and all assistance helps. Our family would appreciate any assistance at this point as for we do not have the ability to predict the future just making him comfortable is all we can do.