Talk to Gastroenterologist on 22days Old Son Has Hard Constipation & Gas Problem

Aoa, my son has been suffering from hard constipation and gas problems. He is unable to sleep at night and keeps turning left and right with moanings and stretches himself which makes him red (because of force he applies i think). He takes formula milk (meiji fmt) and not breastfeeding these days because he is used to feeder nipple now. Kindly suggest any solution please. Today we are feeling his head warm but hands and feets are of normal temperature.