Start with your cat in a ‘sit’ and let your cat nose the treat but rather than giving it, lower your hand (or stick target) to the ground between your cat’s paws. As its nose follows the treat slide your hand back towards you. Your cat will slide one foot forward, then the other and as it drops to the floor say ‘lie down’. Try ‘lie down’ training in front of a bar such as the side of a chair that is too low for your cat to walk under. Let it nose the food then withdraw your hand under the bar of the chair necessitating your cat to drop its head and its body to follow the treat. Once its head is under the bar let it nose the treat then give it.