My 9 nearly 10 month old has never been a great sleeper and ultimately ended up in our bed just for some peace. However I'm now trying to get him into his cot. I've been putting him in the last 3 weeks and it seemed like he was finally settling, however now he screams the place down when I put him down. I don't know why he's doing this. He's fine in the day, very happy. But as soon as put him in his cot he kicks off. It's actually draining me now. I hate hearing him scream for every nap and bedtime. Any suggestions?