Keto or carnivore diet - after adaptation it's a timesaver, you'll pretty much go omad automatically after a while, safes a lot of time and is anti inflammatory.
try starting out with intermittent fasting, something simple like a 8:16 timeline (8 hour eating window, 16 hour fasting), and then move to 6:18 when you get comfortable.
It is a form of time restricted eating/fasting that is being researched of late for it's positive effects on health and longevity.