Both of my parents are simultaneously dying from different forms of cancer. My father the same as yours (it started in his upper gum line). My mother a rare form of bile duct cancer. They’re not the sort to engage in psychedelics, but I suppose in some way their deep religious beliefs and experiences served the same purpose.
Your story and others I’ve read have really helped me understand the turmoil they’re facing internally and externally, and to analyze what I’ve been feeling to this point.
Perhaps a brief trip into the unknown is in my future.