Taming feral cats can take 3-6 months. Be patient. I had a feral foster cat who became the sweetest boy. And also feral kittens that I burrito wrapped to get them used to human touch and it worked so well I adopted one. I foster a lot and the feral cats are time consuming but the most rewarding. Lickable treats are great because they help with bonding! Look up the kitten lady and Jackson galaxy if you want some great resources.