We had a small breakthrough yesterday. Theo was in the living room at the same time as Norma and Alias. He walked by the sofa they were sleeping on and didn’t even notice they were there. We he turned around a walked by again, Norma got up and the two of them came close to touching noses. Then Alias got up and Theo ran away. This led to Norma following Theo to the kitchen but she moved too quickly and startled him. He hissed and growled. Today Theo was more curious about his new siblings sniffing areas they have played in but when he saw them he hissed and ran away. Baby steps.