I also love yorkietalkjillys posts! She seems to really have a good grasp of what's going on in those tiny little minds!
One small suggestion...when I was training my little girl..there were multiple treats to enforce each "Good behavior" and there were Lot's of "Good behaviors" Sit, come, stay, shake, wipe your feet, up, twirl, speak, bow, etc...when you're talking 30 or 40 treats a day (Minimum) plus the ones she gets for "Doing business" outside or on potty pad... that can be a lot of calories, She started getting pudgy( she went from 3 lbs to 4 and the vet told me she was losing her waist) So we started using cheerios. That took care of the issue and she was her healthy 3ish pound for the rest of her life. After she started having kidney issues later in life we switched to those organic baby puffs. No salt no sugar and sweetened with fruit. Best of all a 1/2 cup of them (about 80 pieces) only has 25 calories.
Hope that helps a bit.