Helping an elderly

Hi everyone, I'm in a state where my oldest member of the family is having a tough time in life because of his age, his around 80-90. My other family members are trying to help him with medicine and with other medical help, but he keeps refusing it. This is where my question lies, should I acknowledge his request or join the rest of my family to help him. Im sorry if this is confusing because the obvious answer is to help, but his choice should be still top priority over what the other family members want.

Thank you for listening.