I rock my baby to sleep or my wife nurses him till he sleeps. However the moment we put him into the cot, he wakes up and starts screaming. Then we rock him to sleep and when we put him into the cot, he continues screaming. The cycle repeats till we are very shag. Anyone has ideas how to solve this?

same here. i tried the suggestions that i have read here then when i try it last night swaddling and latching the baby helps for my LO. i also put my arm or my body near him while i put him down besides our bed so he still feels secure cause he can feel my body then i remove my hand slowly after some time or i just want us to sleep like that. based from experience you need to try every possible way and you will find what suits for your baby. good luck. i wish my technique will work for my baby everynight :)