So I have been thinking about changing my daughters middle name. From Madison to Diane. That is my…

So I have been thinking about changing my daughters middle name. From Madison to Diane. That is my mothers name and my middle name. It will be a process. But on the way to the hospital to have my daughter I was second guessing myself. Now I wish I had used Diane for her middle name. What do I do?? Keep the name she was originally given or change it, the older she gets the harder it is to change.