Hi Meg- My Mickey is 3 months old also and goes for his shots third set of shots this Friday. Did Keeley get sore or sleepy the next day after shots? The breeder gave me the shot records from the first two sets of shots. Do they get Rabies shots at 3 months?
About the dominance thing - I had a Vet say the same thing about one of my Westies once and told me to gently turn her on her back and hold her down till she quit trying to get up and relaxed a bit - and then instead of letting her flip over on her own - pick her up and place her on her feet to show you are the dominant one. I do this with Mickey once in a while to remind him who is the boss. Maybe it is a Yorkie thing - but I don't want him to get the idea he's in charge (all the time).
I hope we get a good report at the vet on Friday too!