The DHP and rabies should be split up. Vets tend to like to get you in and out quickly even if it's not best for the dog.
The American Animal Hospital Association and other experts on vaccine related issues no longer believe that vaccinating with modified live viruses (MLV) like DHP is necessary yearly. It can cause some not-so-good things to happen. For the safety of your Yorkie, it would be best to research the whole issue before agreeing to anything.
