Can I suggest that you could use an app – such as MyFitnessPal, there are other alternatives – to log in your calories and see what the balance of (good) carbs, fat and protein is?
You could also use http://keto-calculator.ankerl.com to review how many carbs you want within your 800 BSD calorie allowance.
There are also things called Ketostix, which are readily available online, which you use to test your urine (very simple and quick to do) to see if you are in ketosis, and burning fat.
I started the BSD not because I had a really great amount of weight to lose, but because I wanted more control, to lose c 20lbs (ideal weight 9 stone), and to stop what looked to me like a bit of carbohydrate addiction.
After a week or so, I followed up (on advice from this forum) this balance of calories stuff, and have found that choosing a target grams of carbs per day (some people here work on 50gms per day, I am targeting myself slightly lower) to suit yourself will kick-start more weight loss. Although fat does seem to hang on desperately by its fingernails, doesn’t it.
Since then, I can see I am in ketosis from the Ketostix and am therefore definitely burning fat from somewhere. It didn’t show on the scales, no big losses, but I can tell from my body shape it is going. I also know that if I am burning fat then I am probably doing it from around my liver and pancreas, which is GREAT NEWS!.
I have also been told that, when burning fat, it is this visceral fat which goes first, and only then the subcutaneous fat (the stuff you can see). This makes sense when you don’t see a loss on scales, but are fat burning, and your waist size goes down. That’s the visceral fat starting to go. Only at the very end is the subcutaneous fat being lost from the most persistent spot – under the navel (the ‘belly wedge’ as it’s been called here.
So my advice is to do a bit more research on the constituents of your calories, and see whether in tweaking these a bit to up the fat and protein, and restrict the carbs a bit, that you can see more weight loss. But if you are feeling good, seeing changes in body shape, then not to attach too much value to weight itself – if your clothes are looser, you are definitely losing (and winning!).
Hope this helps.