"Ketosis" is only a fancy way of saying "if you eat very very few carbohydrates your body is forced to use up fat to keep moving, and so you steadily lose weight"
So -Q "how do you go into ketosis?"
A "By following a diet with very few carbohydates - like Dukan"
I know other people have asked this - but if you fill in your height as well as your weight in your stats is does help people like Jo, who have so much experience and wisdom to share, give you right advice to achieve your particular goals safely.