i give my girl lactose free milk and it’s the same thing. i think their bodies are just getting used to it. we just gotta remember to give our babies water or they’ll get backed up. we’ve been doing milk for about 2 weeks now but today her poop was dark like normal 😬
My son has been on whole milk for almost a month now & this has been happening to him since day one. I am going to ask his pediatrician about it at his next well visit!