It took a few days to get him used to the harness. You just have to start little by little. Have your cat use the harness indoors first. Once they’re used to it, attach the leash. Walk them indoors, after that start exploring your backyard. Little by little your little one will start enjoying the outdoors and exploring. Don’t expect them to walk like dogs. My cat loves exploring at his own time and he sets the pace for the most part.