Penny Lane started puppy kindergarden last week and did very well. She already knew how to do what as on the "lesson plan" (sit) so it was a little boring for her. My question, though, is how many training sessions should I do with her a day? I keep them short (10-15 min) but I don't know how many to do. I usually do her training with her kibble, which usually takes the place of lunch. At class, though, I use hotdog to keep her more interested. Also, last week she fell asleep in class (she was the only one to do this). Is that normal?