If by weight you mean bodyfat - the answer is no...
If by weight you mean water and muscle glycogen - the answer is yes...
Eat a healthy diet with enough protein and adequate essential fats - and the overall determining factor in whether you will lose adipose tissue is eating below maintenance calories. And not to rant but why does everyone always need to lose weight "fast"?
If you can do a ckd to lose weight, it should work pretty well. Kentucky's right though, after you get down to your goal wieght, you have to learn good eating habits for maintenance, or it's all for naught.
reducing carbs is a good idea but calories are the most important thing to watch when trying to lose weight
i lost more body fat on a 40/40/20 style diet than on a keto but lost more weight on a keto