Yes. Cooking on LOW lets the flavors develop more fully but if time is an issue, you can set your slow cooker to HIGH and have the chicken done in approximately 3 hours. Bear in mind slow cookers vary in their wattage so be sure to check on it occasionally to ensure you're not overcooking the chicken. The internal temperature should be 165°F. Once you shred it, let the chicken sit in the juices to absorb some of that flavor.