Scroll to top button – Change it to a specific section

please try this in your child-theme functions.php:

function change_scroll_top_link(){
?>
<script type = "text/javascript">
(function($){
	$('#scroll-top-link').attr('href', '#newID');
	$('#scroll-top-link').attr('title', 'Get in touch');
	$('#scroll-top-link .avia_hidden_link_text').text('Get in touch').css({
		'display': 'block',
		'position': 'absolute',
		'top': '-40px',
		'left': '-40px',
		'width': '120px',
		'font-size': '14px',
	});
})(jQuery);
</script>
<?php
}
add_action( 'wp_footer', 'change_scroll_top_link' );

But: maybe it is enough if you have the title to have “Get in touch” – and to have that on hover
Then remove the css part

if you had to do it only for one page:

function change_scroll_top_link(){
if(is_page(5)){
?>
<script type = "text/javascript">
(function($){
        // same as above
})(jQuery);
</script>
<?php
}
}
add_action( 'wp_footer', 'change_scroll_top_link' );

or for more than one page replace it with an array of pages
if(is_page(array( 1396, 1617, 1629))){