If I were in that position this is what I would be researching. Not med advice and might not work for everyone. 1) lots of enzymes to break down rogue proteins (spike protein formula nattokinase/curcumin/etc; low temp dried bovine colostrum capsules with working enzymes; other enzymes like bromelain from pineapple, digestive enzyme blends; make homemade enzymes by taking lots of different probiotics like yogurts and kefir and kombucha and using them to make a sourdough starter. 2) biofilm reducing spices like cloves and rosemary, maybe black walnut. It takes a lot to make an impact. Very very strong mulling spices/pie spice with extra cloves may help support reduction of biofilms and help active medicines get where they need to. 3) protocols mentioned by others here and 4) diet changes. No sugar unless it is a carrier for something like cloves or enzymes. Cycle diet changes. Dr Berg has a video on how to rotate diets in bowel cancer. Look into supplements he talks about like zinc and vitamin c and reuteri. 5) misc. Develop a taste for tonic water and zinc. Keep Epsom Salts around for soaking when detox symptoms get rough.
Talk to the doctor about studies done on high dose vitamin C for sepsis. There have been some conversations on it here if you search for vitamin c or sepsis. One example: https://greatawakening.win/p/15K6SpCAgJ/inside-a-history-and-recent-stor/