I don't have any experience with any diet that starves cancer but I do have experience with a fasting-mimicking diet during chemo. The idea is not to starve the cancer, the idea is to put your normal cells into a protection mode because they think there's a famine so they sort of shut down. Cancer cells have no such regulating mechanism so they don't go into hibernation (not accurate but you get the idea); the cancer cells just keep getting hungrier & hungrier so that when chemo hits your system, they gobble it up like an all-you-can-eat buffet but your normal cells aren't very interested. It's more to help with side effects - less toxicity to normal cells - but, in theory, the cancer cells get extra helpings of chemo so it should help on that front. It's not a complete fast - you can eat up to 500 calories a day. You need to start 2 days before chemo and continue until 1 day after chemo. In my case it made a HUGE different in reducing side effects from Folfiri. I had to fast for a week at a time which was tough the first 1-2 times but not bad after I got the hang of it. It's surprising how much food you can eat after you figure out the system. I was "fasting" under the supervision of a naturopathic oncologist with the skeptical blessing of my MD oncologist (as long as I didn't lose too much weight, he was ok with it).
I'm not suggesting you do or not do anything, only passing along information.
Nov-2009 Early stage CRC found during routine colonoscopy
2010, 2011, 2014 F/U colonoscopies, all clear
Jun-2016 CRC during routine follow up colonoscopy, surgery, Stage 4, KRAS, MSS, inoperable lung mets
Aug-2016-May-2018 Folfox, 5FU & Avastin, 5FU, Folfiri & Cyramza
Aug/Sep-2018 YAG laser surgeries (Germany), 11 nodules (9 mets) removed
Nov-2018 clean CT scan
Mar-2019 New lung nodules
Apr-2019 Nov-2020 Xeloda/Avastin, SBRT, continue Xeloda/Avastin
Dec-2020 Progression, considering all options