Perhaps I should not have used the term "game shape" because that is only a fraction of what Mike is trying to get right. he has been unable to do any leg strengthening exercises this season at all, he has been unable to participate in practice when it involves anything with his legs. he is trying to come back from a very serious injury and getting back to the point where he can play NBA basketball again at a high level takes a ton of work.
Look at KG he's not been himself this season and his injury is not nearly as serious as Mike's and KG played most of last regular season and KG is a better athlete.
Overcoming injuries takes time, getting in NBA condition can take over a year when an injury is involved.