The Fitbit says I burn on average 500-600 calories LESS a day than the BMF. I thought the Fitbit was measuring low but guess the BMF might be high so I am simply splitting the difference and eating 10-15% lower than the average. I have upped my daily calories from around 1600 to around 1800 most days, sometimes much higher (had a couple @2000). I have lost two pounds since doing this. I had plateaued for two months and previously had lost only two pounds in two months so thought there was something going on. I have also started juicing again, something I wasn't doing because of the extra calories that don't help with satiety for me. Maybe the juicing of veggies is helping too. Certainly helps me feel better.

BMI or BMR? I am simply trying to eat below my TDEE consistently and by 10-15% if possible. I think it is working but I haven't done a vLCD in over 15-years so didn't need a reset. I do think I was under eating though because I was hungry all the time. What has been really difficult for me to calculate is the expenditure from walking at work (treadmill desk) 3-hours a day most days. It counts, but not like a real walk. I see the results on my butt though, which is definitely shrinking. Maybe you need to eat more?