Hello,

I have visited your website. Unfortunately, there is no such option in Theme Settings to achieve this.

The slider Autoplay is controlled by a slider revolution plugin and our theme doesn’t influence.

You can try increasing the slide time from the Edit slide.

Screenshot for Clarification: https://ibb.co/tCWBYcJ

OR You can try asking the plugin support for help.

Regard’s.
Xtemos Studio.