“Okay, so what did you do?”
Be patient, my friend, comfort if you can, give yourself a break if you need it.
He is probably colic-y. Which, I don’t think there is a cure.
He will not stay 3, 4, 5 months forever.
This too shall pass.
Maybe test the child for Celiac Disease....which simply means remove all Glutten from his diet.. My son was as this but was not until two years ago, as an adult, we learned he has Celiac Disease. In Europe all babies are tested for this.