Milk dairy sensitivity

Any other August babies beginning to tolerate any milk/dairy in moms diet ebf. My lo didn’t have blood in diapers or really bad rashes but just was so inconsolable that our dr recommended going dairy free. We then found out he had reflux and the medicine helped a ton but I still haven’t tried reintroducing dairy, any dairy even hidden dairy I’m just too afraid it will bring him back to screaming his head off. I’ve been dairy free since 6 weeks and now he’s almost 4 months