kitten diarrhea

does anybody else feed their kitten fancy feast, kitten pate, and their kitten has diarrhea? The only time my kitten has a solid stool is when I put pumpkin in her food, other than that her stool is either extremely soft or flat-out diarrhea ( there is a difference) I’m starting to think it is the “ milk” AKA formula that fancy feast claims to add to the food. She started out on KMR stage 1 and then when I was weaning her she was on KMR Stage 2. Her stall issues started when I weaned her from KMR stage 1 to KMR stage 2. And I am thinking that fancy feast kitten can has the stage 2 in it ( even if it’s not KMR, it’s a different brand used for “ older “ kittens)

her stool issues started before meds were given for hookworms, so it’s not related to the dewormer or worms ( or parasites, stool sample showed only bookworm eggs)