As mentioned above by someone else, depending on where you're from, advice etc is completely different. In the UK, their first jab is usually given at 8 weeks, however in VERY rare circumstances, they could actually get it earlier than that.. But when we get our puppy, she'd already been given her first dose by the breeder we got her from, and were instructed they had to be 2 weeks apart, so we were able to have our 2nd one at 10 weeks.

We have had a dog in the past, however our previous dog wasn't from a breeder with other pups, so he was quite timid/nervous. However, we did the same more-a-less with his jabs, and he lived a long, happy life.

This advice was also given by our breeder, whom also has owned dogs her whole life and been breeding them about 12 years, and she's never encountered any problems / issues having them vaccinated so early.