While I haven't tried this particular method, I can say from experience that it is possible to take a tiny suburban backyard and turn it into a mini-Eden. Building up and replenishing the soil is essential and can be the most time consuming thing but even on a lawn formerly doused with chemical fertilizers and pesticides restoration is possible. I found biodynamic preparations to be very helpful. If you have Earthworms, that's a good sign. I wish you all the best of luck with your garden.