Is it too late to prune these back the 25%? Aside from one having droopy branches towards the ground, I am worried about how tall the branches are getting so quickly (one has to be 10+ ft. already, yet extremely thin and lanky).

As soon as I transplanted them, they just shot up and have been growing vigorously ever since. Any advice? Wait until next dormancy and let them continue? Thanks.

First tree

Second Tree