What is the best position to lay my 3month old to sleep? what can i do to make his head not flat

Sleep position: Your child should be put to sleep on his back to reduce the chance of sids.During his waking hours you can give him tummy time to avoid s flat head.

Alternate positions: With the kid on its back, alternate the direction of the feet every other rest period, so baby must make an effort to look for you by turning the head a different way every time. If the feet point the same direction every time, babies look away from the back wall and toward someone coming, and it becomes a habit allowing the change in shape.