I have 2 existing cats, one I got at around 2 months old and then brought in the other around 6 months old. There were no issues with them being together. They are 3 now and I am trying to bring in another cat. I have followed all instructions on introductions I have found online with 0 progress. I put a baby gate and barrier up so they can see each other and interact, that’s where the progress stops. My one cat will act like the new cat is not even there, will not go near it, and therefore they are not interacting and when we tried to take down the baby gate, it went bad. I’ve tried playing by the gate, eating, petting, treats, nothing works. We restarted and are trying the baby gate again but I can still not get my cat to go near the new. What else can I do to get them interacting?