Girls, share your experience. The son constantly weighs on his chest, …

Girls, share your experience. The son constantly weighs on his chest, eats every half hour, an hour and a half, rarely, but sometimes once every three hours. I worry that he's getting enough milk, because I'm constantly feeding him. Although urination and stool are frequent for him. How often do your kids eat? What is the duration of one feeding? Mine eats an average of 30 minutes.