My baby eats breastmilk that has very kindly been donated to me. He seems to be pretty gassy and recently his poops have started smelling like vinegar and it could be a coincidence but he seems fussier. I tried switching him from the milk he was on, to milk from another lady that I know is dairy free and it made no difference. I took him to the pediatrician, and she said his poops look normal and not to be concerned if no blood and to start a probiotic, which we had already done some time ago. Sometimes it is such a fight to get him to take the bottle though. I have to stand, bounce, and walk before he will calm enough to eat, and it seems like the amount of times this is necessary is increasing.

Basically, have you ever had a baby that just did better on formula? Could this fussiness and issues be the milk or am I overthinking it?