Girls, help! I don't have the strength anymore. The baby is a week old…

Girls, help! I don't have the strength anymore. The baby is a week old. The problem is that he seems to suckle on the breast, but sucks it like mud, I can barely see him swallowing milk. At first, when you just give it, it seems to drink, but then uses it as a pacifier. It either chews on it or just shakes his cheeks with his mouth open. He falls asleep, but as soon as you put him in bed, he cries. Sometimes he takes a nap again after being given, but sometimes patience runs out and you have to give him from a syringe. ? Tell me what I'm doing wrong? First child and even asking not from anyone.?