How can a newborn sleep well on his head?

Now the baby is two months old. When I was born, I was afraid of spitting milk at night and always slept on my side. I searched online for a treasure of various remedies. I found that some babies sleep on their stomachs from birth, which can not only give them a good head shape, but also give them a high-quality sleep. At present, in order to correct the baby's head shape, I bought a shaping pillow on a treasure, hoping to give the baby a beautiful little round head.