I am on the last edit before I send my book to beta readers for the first time, and I'm not sold on two of my characters names since they sound similar. One is Zeidric, with the "ei" sounding like "ee", not "ay," and the other is Xandria. They both have the same sound at the beginning of their names, so I was thinking of shortening "Xandria" to "Ria" or "Ri" so that they don't sound the same.
Is it too late to change "Xandria?" I have obviously grown attached to the name since "Xandria" is the name of one of my most prominent characters, so I don't know if I should change it.