Stefanos,
I'm sorry to hear about your lung tumor. I don't understand how the tumor could double in 3 months on a modified ketogenic diet. I'm thinking maybe you did not implement the diet correctly.
Are you using a macronutrient tracking tool? I don't think I could be successful implementing the diet without one like cronometer.
Are you measuring blood keytones and blood glucose? Again I don't think I would be successful without these measurements. The tool and the measurements turn this into controlled science.
I highly recommend Dr. Mercolas new book - Fat for Fuel. It gets into detail how to nurish your mitocondria. He calls it metabolic mitocondrial therapy(MMT). In this book he details exactly how to do this right.
I keep my intermittent fasting window to 3 hrs - 6P - 9P every day. I don't get hungry because I have 2 tbls of kerrygold unsalted butter, and or 2 tbls of coconut oil and or 2 tbls of MCT oil with tea every morning as breakfast. These fats fill me up so I don't get hungry until 6P.
As time passes I grow more confident in this approach as my tumor continues to shrink. A conservative estimate is 30% now in about 9 months.
I also do the Bravo probiotic GcMAF yogurt which I believe is doing exactly what it says it does which is activating macrophages. HNSCC keeps macrophages deactivated in the SCC tumor microenvironment (called a TAM or tumor associated macrophage - meaning the tumor will not allow the macrophage to activate).
Here is a link to a study where they found a probiotic was as effective as the new 2016 released HNSCC immunotherapy PD1/PDL1 checkpoint inhibitor drugs (are these drugs available to you / lung cancer patients as a first line treatment yet?) at shrinking tumors in mice:
https://news.uchicago.edu/article/2015/11/06/gut-bacteria-ca
I believe it is the probiotic that is shrinking the tumor yet it might not be successful without the diet if the tumor where to get all the glucose it needs to thrive.
I have heard that about glutamine and fatty acids but I don't believe it to be accurate. Cancer cells need such large amounts of glucose, 100 times more than normal cells, they have 100 times more insulin receptors to get this glucose, and they need it constantly, there is simply not enough glutamine or fatty acids to fill in when glucose levels are reduced.
I just read an article where they indicated SCC needs more glucose than any other cancer type.
Consider getting the book, turn the diet into science with a macronutrient tracker and blood measurements and definitely consider a probiotic approach.
Consider supplementing with inulin fiber. I buy 1 lb of powder for $10.00, lasts months, just need a few grams a day. This is a prebiotic that feeds and strengthens your indiginous probiotic population you have had since birth. If you have had any insults, usually through antibiotics or diet (too much sugar), to your gut flora this will help recovery.
Consider getting some fulvic acid or shilajit, soil based metabolites (chemicals from soil bacteria) that helps to tighten gut junctions by increasing gut flora communication.
John