My partner (36 XX) is two months in to very strict carnivore, eating exclusively beef mince and grass fed butter. Total intake is 1-1.5kg been mince and 200-300g butter per day. The only beverage is water or Powerade (sugar free, acesulfame K, sucralose).

Her ketones on a blood meter are consistently low, maxing out at 0.2 mmol/L today. She feels tired, fatigued, and has burning in muscles suggesting lactic acid being elevated.

Just looking to see if anyone has seen something similar and if so what the solution was? Thanks