If you go Carnivore there are a couple things to keep in mind. I tried Carnivore last year and only lasted 3 weeks, because I would just get incredibly painful stomach cramps after each meal. It really started the third week. So the lesson learned here, is you need to supplement the diet with some digestive enzymes at least for a little while. I think it takes somewhere in the ballpark 6-8 weeks for your body to get used to nothing but meat! However, the diet was a lot of fun, and there was no better feeling than eating a steak for lunch at work and saying “hey bro, what you got there, a sandwich? Sweet i am gonna eat this NY Strip!” SO take it slow and do it right and you will not make the same mistakes I did.
As far as Keto goes, I have never tried it. I am starting to slowly adjust my diet to a Keto’ish type one to see how I like it. I tend to get lazy and use eatthismuch.com to aid in my meal prep and for ideas. It actually is not a bad site or app to use if you are like me and want variety and do not care to calculate a full days worth of macros yourself.
Like others have said, don’ overthink it, just slowly adjust in, that way you will stick with it a lot longer than just throwing out your fridge and starting fresh! Trust me I am a master overthinker, and super OCD, so I totally get it brother! Hmmm now I think i am going to go make some Protein Balls, LOL!