They formed distinct male-and-female groups, the father watching over his family, the mother suckling her little ones, the stronger youngsters emancipated a few paces away.
And it looks like the hyoid of Microdocodon was very similar to the hyoid bones of modern mammals, so it's very likely that Microdocodon could suckle, too.
Better if they had been born in the open pasture and suckled by a wolf, that they might have seen with clearer eyes what field they were called to labor in.