I would mix up a B-12 solution and use that to water those trees in. B-12 will help greatly with transplant shock, which is what you are most likely seeing at this time.
The reality of planting trees just as they start to go dormant is that most of these plantings become confused about what they are supposed to do.
I never plant trees as fall is arriving, it is far better to wait till they have dropped all their leaves and had a couple of weeks bare branched.
Once this has occurred, the tree is asleep and you can plant as many trees as you want to plant, without any fears.
Planting just before leaf turn/fall can over stress a young tree which can lead to branches dying or even tree death.
Any time you are planting a tree it is a good idea to give it a shot of Vitamins and minerals, since you are in essence waking up a trees root system by the disturbance.
The best time to plant trees, especially
fruit trees is after they have gone to sleep for the winter, that way they wake up in their new home and can spend that first year establishing their roots in their new home.
I mix up vitamin solution every spring for a wake up booster for our orchard trees, it has resulted in great establishment of good roots.
I also let them grow un-fettered for the first two years, then I prune out all the detrimental branches (crossing, weak joints and doubles) so the trees won't suffer wind damage.
The third year is when I allow the trees to begin fruiting. This protocol allows the trees to have the structure below ground to support them well and that also means they can access the nutrients to put out a good crop of fruit without stressing them in any way.
Redhawk