Teeth whitening

Did my first session of teeth whitening, it was little sensitive but it was ok overall, nothing too much. My teeth got one shade lighter, but i wanted them uniform like all of them in one shade but they are not. Even from before, my canines were more yellow than front teeth , i thought they would get uniform, i have two more sessions pending

Edit: can i ask my dentist to not to whiten my front teeth as i am happy with them but focus on other teeth