You can do a ketogenic diet with no meat at all. Children with epilepsy that didn’t respond to medication used to be put on a high fat ketogenic diet. The fat can be vegetable based.
Oddly enough, that diet can also be used to treat menopausal hot flashes. I had a bad reaction to HRT, so I tried the high fat keto diet for a couple of months and went from having about 12 flashes a day down to 2 or 3.
Hey, give me some wasabi paste and soy sauce and I will quite happily eat raw fish. 🙂