My baby is 5 weeks and weighed 8lbs at birth. I have tried out the baby sleeping bags from John Lewis, Mamas & Papas and Grobag, but the neck is always far too tight. I know they have to be small to ensure the baby doesn't slip down inside, but they are sooo small they seem to be choking him and look really uncomfortable so tight around his neck. Has anyone else found this? Can anyone recommend baby sleeping bags with slightly less tight necks, or with adaptable necks or anything?