https://github.com/WesCook/Nutrition

Lordician

I would love to see compatibility with the Nutrition mod so that if you have turned into a vampire, your nutrition values do not lower as you don't have to eat anymore.

I would suggest putting all the nutrion values to a configurable value that defaults to 30 (the default minimum which you drop to when you die).

Not available for 1.16. Also still no API afaik.
Create a new issue if you want this