Hello, moms! We're three weeks in. We have a problem: for two to three…

Hello, moms! We're three weeks in. We have a problem: for two to three days now, the baby doesn't sleep at night. He seems restless, raises his legs, poops and then has diarrhea, he gets red and cries. He keeps hiccuping all the time. It also seems like he has a stuffy nose, but it's clean. He breathes heavily, as if there are some mucus deep inside him. He snorts with his nose, maybe I'm already imagining breathing with a wheeze... just help me with advice, thank you ????