system
Given the following post, respond as if you're commenting on Reddit:
human
How durable was baby Superman?

If the Kents hadn't found baby Kal-El in that corn field, how long would he have lasted?  This is assuming his craft didn't have a sustenance system of some kind.
gpt
Indefinitely. Baby Superman had, more or less, access to every power Superman currently has. There may have been a period of charging the solar battery, so to speak, but for the most part he had access to all the powers we know him to have and then some. His actual powers developed quite early and he began repressing them and setting up some very prominent mental blocks to keep himself in check.

Most anytime he discovered a new power or surpassed a previous limitation was actually him overcoming those mental blocks. So an infant Superman (presuming a full charge) is a pretty potent critter.

He has a diminished need for more conventional sustenance because of the amount of energy he derives from sunlight. But he also has the jaw strength and digestive system to break down almost anything that little son of a bitch put in his mouth for necessary raw materials to grow. 

He'd be crawling around that corn field devouring whatever was at hand (probably corn), killing or annoying anything that attempted to eat him, and be generally fine until someone else found him or he grew to be a cave superman. In which case, god have mercy on our souls.