Welcome Bluebird. My yorkie is 7 months and we are in our 5th week of training. He is the only small dog in the class. They are completely different creatures than big dogs. My trainer has to give me differnt methods to use on Ozzy than the others. His attention span is shorter and due to his size some commands need to be done differntly. I would speak to your trainer privately and ask her if there are tricks you can try. Maybe there are classes that have only small dogs or have fewer dogs that you could switch to? Yorkies are so smart but they are a handful to deal with sometimes
(when walking nicely I always have a cheerio in my left hand and make sure he knows I have it, then it's all eyes on me!!!
) Good Luck!