I have been eating keto lifestyle now for over 2 years but has only been the last year Ive started using a blood meter to monitor after having weight gain and water retention yo yo regardless that I keep my eating clean. What I am confused about it not seeming to get high numbers or even hold ketosis during certain times of month (during my period numbers are nil). Im 43 hours into a fast and still only showing as .4 usually after 120hours I can get to as high as 4.0 but as soon as I eat the number plumet until Im out again. I eat well under 20 total carbs, zero processed foods/sauces, no sweetners or extras. I eat meat, eggs and fat omad. I can fast for days so sure there is some fat adaption but yet no weight loss. What am I doing wrong? I honestly dont understand these keto numbers other than Im supposed to aim for 1.5 which for me seems impossible to hold.