This is my first yorkie and she was 2.6 lbs at 3 months old. She is now 6 lbs at 6 months old. She seemed to have gained weight every months about a pound. Since she has turned 6 months she does not seem to be gaining much any more. I figure she will be between 6 - 7 lbs which is still a pretty light dog. That is the weight the breeder told me she would be and so far that seems to be the case. I won't know for sure until she is 12 months. Your puppy is extremely cute. Good luck to you