My baby is 8 months now. The past 4 or 5 nights when it's time to go to bed he will be fine, tired and ready for sleep. About 5 mins or so after being put in his cot he will start to cry and then start screaming. This can go on for up to an hour. No matter what we do he will cry and scream till he exhausts himself and falls asleep. Is anyone elses baby going through the same? Not sure if it's a leap or a sleep regression but hes always been really good at falling asleep on his own. Please help!!