I’ve been ketogenic for almost 2 years and I’m 95% symptom free.
My experience has been that you can’t eat much plant doing keto with pfs. I eat a variation of carnivore diet where I take most of my calories in animal saturated fat, my proteins from mostly beef (grass fed if possible) and the less than 4% calories from carbs, I get from eating steamed kale on one of my meals, and from 5 tbsp of low GI oatmeal right before brushing my teeth and going to sleep. It lowers cortisol and I sleep better.
Coconut oil has been difficult for me. I can’t stomach it ! But I can do coconut MCT oil, less than 1 tbsp a day (in my coffee)