Hi @zyrawr I'm so sorry to hear about your father. I lost my dad to a very aggressive cancer, and my mom battled against breast cancer a couple of years later so I became very interested in this topic. I've read a lot about natural cancer cures and thought I'd mention a few things you may want to add to the mix. One is compound called Laetrile and its found in apricot kernals (the inside of apricot stones) apples seeds among other things. It suppose to actually kill cancer cells but I have no direct experience with it. You'd have to do a good amount of research of course but here is one link: https://www.cancertutor.com/laetrile/ also a lot of foods have most of their nutrition in their peels and rinds so that is something to consider too. Blending tons of leafy greens with with spring water or distilled water will help get deliver lots of nutrients. Chia seeds are an insanely powerful anti oxidant so plenty of that. Also I would suggest getting into sprouting and eating tons of broccoli sprouts, as much as possible. They have something called Sulforaphane which have shown to be very effective in killing cancer cells. Check out this link:

I think a positive attitude, connecting with nature, yoga, emotional healing combined with nutrition are important. A real holistic approach is needed (just my opinion). I hope he pulls through! I wish you both all the best.