Sorry your going through this Arleen. I know you may not like to hear this, but I think you should prepare yourself for the D going through in a week. It seems you are waiting and hoping things will change before the time comes, but its not likely he will change his mind this fast.
What I fear will happen is that as the timeline gets closer and closer and you see no change by H, you will begin to panic and try to beg or start a R talk as a last resort. We all know begging and arguing wont work, it only pushes them away.
This doesn't mean things are hopeless, D really isn't the end. You have children together and that bond will cause you to be connected for life. This gives you time to work on your changes, time that could show H those changes are real. Stay strong, you can do this.
Accept what is, let go of what was, and have faith in what will be