Yes, I think heading back to the first page is the simplest approach. I've created some code for you below.
You can attach the following as a .js file in the Resources section of the full export dialog:
$(function(){
var inactivityTime = 60000; /*in milliseconds*/
var inactivityInterval = setTimeout(function(){ resetExperience(); }, inactivityTime);
/*start timer over after any of these gestures*/
$(document).on('touchstart pointerdown vmousedown vmousemove touchmove pointermove', function(e){
clearTimeout(inactivityInterval);
inactivityInterval = setTimeout(function(){ resetExperience(); }, inactivityTime);
});
function resetExperience(){
clearTimeout(inactivityInterval);
if(nav.current !== 1) nav.to(1);
inactivityInterval = setTimeout(function(){ resetExperience(); }, inactivityTime);
}
});