I noticed a difference in 36 hrs. But, I think t was hungry to on my breast milk because he was refusing to fed properly. So at least he wasn't hungry YK?
I think most people see improvement in 3-5 days and by 2 weeks you should see def improvement. Things weren't perfect, but t would eat, he would sleep longer than 30 mins (day and night), he had good periods of the day and stopped refluxing for the most part