My biggest concern would be that healthy adaptive systems benefit from variety, challenge, and chaos.
Intermittent fasting is good. A little contamination from things that are normally unhealthy is good. (See, for example, the hygiene hypothesis or the idea of hormesis.) Chewing is good -- as is the somewhat random mix of very-chewed or less-chewed foods you swallow. Triggering your body's reactions (including your gut biome's reactions) to different extremes of nutrient mix will keep the systems 'practiced'...
..unless you're sure you'll spend the rest of your life like a brain-in-a-vat, and then you might as well take nutrition by IV.