There was a guy on youtube a few years ago, maybe 2011 or 2012 that did some extreme survival videos in minecraft but because of how many people are doing that now its almost impossible to find them if you don't remember the name. He was using to strict rules and some mods as well, I will list off the ones I remember
inventory editor to shrink his inventory space
could only eat once in the morning and once at night
had to drink once in the morning
could only use what he could carry in his hot bar
could only dig one block into stone
Thats all I can remember of the top of my head, I know he had more rules he was following though. If anyone can remember this dudes channel that would be awesome!