Bohdan is getting better, he is being so much more active, getting up and going outside whenever Trillian needs to go out, which is often. Bohdan seems to be sleeping more heavily, but I think this is due to his being more active.
This increased activity at his own pace really seems to be helping him out.
His disposition seems to be a lot better, he no longer seems depressed, he is more tolerant of trillian and is actually wanting to play. He play bows, and does a little bout of chase now and again. It is very encouraging.