My 3 month old has a slightly flat head on the one side, only really visible if your looking down on the top of baby. All the advice I get is to move his position when asleep, don’t spend a lot of time on back, cuddle more, etc. However, my baby HATES tummy time, isn’t very cuddly but loves being lay on his back kicking his legs freely. Is this really anything to worry about?! 