Winter Juniper Repotting Aftercare

I just watched the “Nursery Stock Shohin Creation” video from December:

The nursery stock juniper gets downpotted pretty harshly, in addition to the styling. What sort of aftercare is needed to maximize chances of survival? I assume it’s going into a greenhouse for the winter.

It will go into his greenhouse or he may put it in his heat bed to help settle the roots quicker.