Girls, can you tell me if changing formula is necessary for a baby wit…

Girls, can you tell me if changing formula is necessary for a baby with atopy dermatitis? We're having trouble with the mixture, it's leaking on us, we decided to switch to Sevenlac, but so far everything is okay, except that the stool has become dark green, probably not suitable, the same thing happened with Nutrilon, it didn't leak well either, but the stool was also green, I'm already tired of looking for a formula that would suit her, but from her, there's a closed circle