Boi seems to be over some of his issues from last fall. I took him to 2 training classes with a different trainer. She didn't manage her classes well and it caused a lot of reactivity and anxiety for Boi. He had some before, but her classes brought out his worst. By the end of her classes, he has associated training with feeling anxious and eye contact with training. He wouldn't take treats - he would shut down at the sight of treats. He couldn't do eye contact. He could only manage one repetition of a behavior - he would shut down on the second rep.
I worked on dumbbell retrieve during that time. No eye contact. Totally new behavior. One repetition. Rewarded with a rawhide roll.
I had also started him on anti anxiety medication due to his reaction to the classes, and he had malaise side effect, which definitely wasn't helping his response to training.
He is off the med, onto scheduled feeding, and have been working on training sessions. (and communication buttons!). He's finally "back" with semi-reliable responses to training sessions, able to make eye contact, etc. It's a relief. I don't know how far he can go, but at least we can get back to trying!