My answer would be no. Keto is not for someone who are not doing any exercise. Why? Before entering the ketosis state, you must depleted first your glycogen store both from muscle and liver. It is hard to do that without doing any exercises. And to fully utilize the fat burning effect, you have to do exercises to use the energy, if not, the effect would be too slow.

My take would be just do the low carb diet. Lower your carb intake, less rice, less bread take no rice at all.

The purpose of very low carb in Keto diet (less than 40g) is to change the 'fuel' usage for the body. Instead of using glucose that comes from carb, our body will use ketones that comes from fat.

Basically, it is all about calorie in vs calorie out. The purpose of lowering carb so that you will have lower calorie in hence creating a calorie deficit. Keto diet is not so easy, you need to count precise calorie, hold out from not be able to eat most carb food such as rice, pasta, bread, roti canai etc.

And you need to do it continuously without taking a break once; by break would mean eating carb. Once you consume carb that makes your carb intake more than 50g (more or less depends on the person), you will get out from the keto state and you need to restart the keto diet. To reenter the keto diet, you need about 2-4 days depending on the person.

The protocol itself is quiet 'troublesome' and to follow it requires great discipline and I would rate it as a quite hard diet to follow. Why? Because I'm doing it currently, just start back yesterday. Even after a one day of intense exercise, I'm still not in the keto state.

There are more easy diet such as atkins etc2. If you are in an unexpected dinner etc, you can skip your diet but keto? Once you are out, it takes days to get in the keto state.