Hi there! I have two 2 year old male cats and they’ve been fed a variety of premium cats foods since we adopted them as kittens such as blue buffalo, Nutrience, Wellness, Fromm and Nulo (majority of them grain-free) and up until recently Iams Healthy adult. However, recently one of my cats began having an allergic reaction to something that was in his Nulo Indoor Grain free cat food which he had been eating for a while. And recently I’ve been quite broke so I downgraded to Iams Healthy Adult. He received a steroid shot, some antibiotics, and is doing better and he doesn’t seem to be allergic to Iams. But I’ve read horrible things online about iams and I’m wondering should I switch back to a better cat food?? I’m just scared his allergy might get get re-triggered from a premium grain free food like with Nulo.