There's been some promising research on pomegranate taken both internally and as an oil rubbed onto the breast.
But when it comes down to it - I share your important question - can you rely on this when your life is on the line? I wish there was more definitive research on alternative approaches and more doctors who have thoroughly vetted these approaches and could give you a better answer. It feels often that you are going on anecdotes and - as your son's feelings show - doing something foolish when it comes to the orthodox treatment.
My best to you in doing this - I look forward to hearing what you do and what works.