We co-slept with Hudson for the first 4 weeks because he was so unsettled and just would not sleep in his bassinet. It was great having him so close by to feed in the middle of the night, but DH and I were both keen to get him into his own bed as we slept very lightly and woke up constantly in a panic wondering if we had squashed him LOL! Once we put him onto formula at 4 weeks and he finally had a full belly he has slept in his bassinet with no problems at all.