Hello. I’ve just started the program with Puck, our nearly 9 year old Border Collie. He knows some basics. He’s good at leave it as far as food/treats/dropped items. He knows sit, down, touch, go to mat, and here (although still working on religion that one). I am struggling to get him to do “take it”. I’m not sure how long each attempt should be or how to tell when he simply isn’t in the mood for a session. Any help or suggestions would be great. Thank you.