I would just try to maintain right now. Get the move completed and begin again when you get settled in at your new home. Your heart is not in the training right now and the stress of the premove is being felt by your kids.
Make this time fun by taking pictures of the house you are in now and what they like about it. Take pictures of the places the two older ones like like the park and such. Put these pictures in two separate books (one for each child) and let them express what they think and you write it for them.
Then make a chart or calendar up for the move and when you leave. Post this on the frig about two weeks before the actual move because they don't understand time like we do. I learned this the hard way with my son when we got orders and told him about three months in advance. Everyone was tired of hearing him say he was moving and wished he was gone by the time we moved.
Good luck with the job and your new home.
The other S.
PS Your littlest one is too young to know what is really going on. All of your kids wil adapt to their new surroundings. Just think positive and find new things for them to do.