Like
@jack412 says, there's a tipping point, where you get below your personal carb threshold.
For me, I can reach ketosis, start to feel better, get a lot of benefits, and lose weight really slowly.
Or I can drop the carbs another step, and continue to feel all those benefits, and the weight goes a bit faster.
How low carb are you, and what are you eating on a daily basis?
I've also found that in order to lose weight, my body MUST have
all of the following
every single day. Without them, weight loss stalls:
1litre of water /5 stone of body weight
Reasonable activity - a dog walk, shopping trip or walk to work
Keeping under that carb limit
Avoid wheat (it doesn't agree with me and causes massive insulin resistance and water retention)
I don't count calories, or fat, but many people do. Sometimes they find it beneficial to change calorie intake daily. I think that happens naturally with my eating habits.