It is at 15 minutes by foot. When you leave Bed and Chai go right and then turn left on the second street called Lala Lajpat Rai Road. You can also try another road that goes faster but is more complicated: when you leave Bed and Chaï go left, then turn right on the first street you see, then when you arrive in a place in front of the Kailash Colony Park (where there are many shops, a chemist, restaurants) turn left, continue and you will arrive at the Kailash Colony metro station.