Changing the theme name will reset the theme settings. Please take a backup of the theme settings first.
In the child theme styles.css just edit the theme name from “Your theme Child” to “Anything you like” Just make sure that template name should be same your parent theme.
Theme Name: Anything you like
Theme URI: http://example.com
Description: Your custom theme description
Author URI: http://example.com
Template: Your parent theme name
Now rename your child theme folder to “Anything you like”
In WordPress Admin >> Appearance >> Themes you can see the new theme along with existing child theme, Just activate your updated child theme.
That’s it! If you have any query then Please Leave Comment down below.