Neither! Neovim for most of my work and vscode w/ appropriate plugins when it's needed. If I need any LLM assistance I just run Claude Code in the terminal.
Keto works well, but I'm concerned about the extreme fat intake. I did manage to lower my A1C from 9s to mid 5s using Keto as a T1D, but eventually settled into a high protein, moderate fat, low-ish carb diet and that has worked pretty well without being hyper-restrictive. Heavily inspired by the late Dr. Richard K. Bernstein.
Shouldn't come as a surprise - there are so many factors involved in glucose response to food that it's almost impossible to replicate a glucose response even with a controlled intake. Sleep, activity levels (before, after, during, even days before, etc), stress, hormones, all of these are major factors involved in how glucose is metabolized.