Hello and welcome to you and Alex! As others have said, don't expect much after such a short time. My advice would be to read the "stickys" here on the forum. Their body language is subtle and you have to learn it. Alex has a lot of history that you don't know. It has shaped his responses and behavior, because they have excellent memories and don't forget anything. With time and patience, you can build a good relationship with Alex and he will come to trust you. When I say time, I mean months, not days. I am a rehomer too, and it took about 3 months for Timber to start trusting me. Good luck and God bless