The command that the stump of the tree is to be left means that your kingdom shall be preserved for you, once you have learned that heaven is sovereign.
he was cast out from human society and his heart was made like that of a beast; he lived with wild asses, and ate grass like an ox; his body was bathed with the dew of heaven, until he learned that the Most High God is sovereign over human kingship and sets over it whom he will.
I heard a holy one speaking, and another said to whichever one it was that spoke, “How long shall the events of this vision last concerning the daily sacrifice, the desolating sin, the giving over of the sanctuary and the host for trampling?”