For some time already there are studies suggesting that infant colic is not actually a colic but the process of early brain development. In face of this, looks like there's not much we can do. As much as it is heartbreaking, most parents and babies just have to walk through it.
"Suggesting"? It's pretty obvious to everyone with half a brain that "colic" is just a label applied (specifically in the English-speaking world) to a baby that keeps crying despite all obvious causes of distress being taken care of, and has nothing whatsoever to do with digestion. I mean, the official definition is based exclusively on the amount of crying and nothing else, how could it possibly be a diagnosis of an underlying cause?
https://journals.lww.com/jpgn/Fulltext/2013/12001/Brain_Matu...