About 8 months. Unexciting speed compared to diets, but I'm not on any diet and I eat whatever I like. It's not going to come back on. I expect to lose the same amount again in the next 8 months or so.
That is perfectly normal speed of losing ~1 kg per month. I have been there...lost ~20 for 2 years and keep it until now. As for the body temperature I read somewhere that losing 3% of weight slows down metabolism significantly that leads to wide spectrum of side effects like low body temperature.
Not an expert here, but your metabolic rate depends on how much muscle you have. Losing fat alone is hard. Typically you lose some muscle along the way, unless you try to fight it with weight training.
