When summer came, we were under some pretty tight water restrictions because of the drought in our area. Our backyard got watered once a week, if that. Now the weather is cooling off a little bit, and we can water the lawn in the evening three days out of the week. The problem is that, in the meantime, the lawn is pretty much dry and yellow with very little green. Is there any hope of recovering the grass in the backyard with only being able to water it for a little bit three days a week, or is this now a lost cause?