Baby only want to sleep while being held

Not sure because of recently circumcised or this is just a phase. After being circumcised, my baby only want to held even when sleeping. Even when he’s sleeping for quite long but as soon as we place him on his cot, after few minutes he would cry and as soon as we carry him back and soothe him he would fall asleep again. Tried to place him back on his cot, he would cry again. And yes even after being fed, burped, swaddled. He’s 3 weeks old btw. Before this he can sleep peacefully on his cot.