Looks like if you copy the autocomplete.php template into your child theme, you could adjust the configuration for this.
Notes on how to customize the autocomplete template:
https://github.com/WebDevStudios/wp-search-with-algolia/wiki/Customize-the-Autocomplete-dropdown
Specifically you’d be wanting to customize this section here after making the copy:
https://github.com/WebDevStudios/wp-search-with-algolia/blob/2.1.0/templates/autocomplete.php#L177-L185
With that section, you could add the following to the config js object: minLength: 3,
making it look like this:
var config = {
minLength: 3,
debug: algolia.debug,
hint: false,
openOnFocus: true,
appendTo: 'body',
templates: {
empty: wp.template( 'autocomplete-empty' )
}
};
Should do the trick from what I’ve been told and understand.
More can be read about the autocomplete config over at https://github.com/WebDevStudios/wp-search-with-algolia/tree/main/js/autocomplete.js