I like how Laius keep stumbling upon lost gems in the adventure because he's either too curious, too peculiar or too hungry to think logically. His guts literally told him to do what he wants haha.
Anyway, I told ya, you need to learn fasting aka abstain from eating, drinking etc from dawn till dusk (maximum duration per day) to built your resistance to food/drink dependency. If you never tried to fast & jump straight into it, you'll suffer though, so do it gradually. It's not just to skip meals but you'll benefit from it by lowering your high blood pressure & sugar, being frugal about money, helping you to curb your addiction to anything, training your body to endure hardship (starvation & dehydration are some of them), & ultimately helping your stomach & intestines to rest. But the key factor in succeeding is your true intentions in fasting. Some do it for religious purposes, some to be healthy, some because they need to do surgery (lol but seriously it's true). All in all, food & water simply won't become your everything in the end.