Hn titles in booking form

Hi Guys !

When you insert the booking calendar inside a page, you find yourself with at least 2 H1 (one for your main title, and one for the booking type title)... which is really annoying...
Here is a snippet provided by FluentBooking to change this :
https://github.com/rakidhasan93/WPManageNinja-Snippets/blob/main/fluent-booking/php-snippets/change-calendar-title-heading-tag.php

BUT.... in the calendar there are also H2, H3,...and it's not possible to remove these Hn, because (said by the support), it's hardcoded in the plugin...

Shahjahan Jewel can you do something to remove those Hn, as this would create a bad headers list... ?