Modify default field heading levels

Hi, I am looking at using this plugin for a site that needs to pass accessibility standards and need to find out if it is possible to change the heading levels of the ‘name’, ‘contact info’ and ‘about yourself’ headings for the registration and edit profile pages?

Is it possible to this via the child theme or via a function? The current heading levels for those fields are heading level 4 and they should be heading level 2 to suit the hierarchical order for the page structure.

Thanks for your help.