Just adopted 2 kittens at 3 months old from a shelter. I have had them about a month and a half now and I immediately only put them on dry food blue wilderness kitten formula food left out all day. One has eaten alott more than the other growing alot faster. But both have been having mostly loose stools, diarrhea. Should I switch foods? Not leave it out all day? They act fine and healthy, just concerned with them not having healthy stools. I have never had kittens, only adult senior cats before this so I am unsure what to change or do for them!