you will have to create a child theme incase you update it doesnt delete the changes you make,
i don’t have the theme your using but you should find the following file two files header.php and front-page.php
go inside the front-page.php file and find header_image() function.
cut the whole code section this function dependent on probably it will be something like
<img src=”<php header_image();>”>
and move it to the header.php
