Please help my brother pay for cancer treatment

My brother is a happily married father of three. In 2016, he began having symptoms like loss of appetite and unexplained sudden weight loss. He went to the doctor in June 2017 after he had an episode of extreme dizziness and was misdiagnosed. They said he had anemia and gave him pills that were supposed to help him.  He consulted a specialist, who confirmed the anemia, and did more tests.
Ruben was diagnosed with stomach cancer in 2017.  He was scheduled for surgery twice and both times the procedure was cancelled because the hospital lacked the required resources and equipment.  The cancer continued growing and by the time he had the surgery, the tumor was inoperable.  He was treated with chemotherapy.
Ruben had another operation in which the doctor discovered that the cancer had spread to his liver and pancreas. They closed him up and essentially sent him home to die. 
My brother was determined to live. He sought alternative medicines and treatments to complement his chemotherapy and his liver and pancreas are currently cancer-free. Ruben is desperate to continue his treatment, especially because it appears to be working, but he has run out of money. His treatments cost about $1000 per month. Please help me; I am trying to keep my brother alive.