I bought my ram in October (as a tup lamb). I visited him about two months before that and saw him and the rest of his breeder's flock, and then saw them all again when I collected him in October, so that gave me some assurance that he was coming from a healthy flock. I brought him home and put him by himself in the hard surface pen + shed that is very close to the house, and wormed him, and kept him in there for a week. He got attention whenever I went outside, and he could smell and hear the other sheep not far away. After a week I put him in a paddock with just my own two ram lambs, where he stayed for about three weeks until tupping time. Not sure that was optimal but it was what was practical for my circumstances.