Here is an account where a T1 diabetes patient was using keto to manage, then flipped to high sugar/low fat, and managed to recover.
If it were my loved one, I'd be hiring prism.miami or some other bioenergetics expert.
https://x.com/Outdoctrination/status/1763552280349950281?t=2P3nXj20ZK89xHpb4F6b7g&s=19