ACANA Wholesome Grains Puppy Recipe

In a couple of weeks I am getting a mini dachshund puppy. I am struggling so much with what to feed him! I have seen so many mixed reviews about so many foods. We recently bought the ACANA wholesome grains puppy recipe, emphasis on the wholesome grains, but I’m second guessing our choice. I have seen a lot of people recommend purina pro plan, but I am struggling with knowing if it really is the best option. I have seen many people claim that purina pro plan pays veterinarians to promote their food, and that their ingredients are not good.

A lot of people say to stay away from ACANA because they don’t use grains, but the bag I got DOES have grains, so I’m not sure if that makes a difference?

PLEASE HELP! And please give a no bias answer. I just want to know what’s best for my puppy, cost doesn’t matter!