How do i prevent my infant from self-turning to sleep on it side?

Babies: Perhaps we should ask the mothers here online. My experience is that you put rolled up blankets or other soft items to build a wall or barrier to keep them in a safe position.

Back sleep: I'm assuming you are saying the baby is turning from its back to its side during sleep. And the answer is you can't avoid it. Once your baby is strong enough to alter their sleep position, there is nothing more you can do except put them to sleep on their back and let them move to their point of comfort. While we know back is best, by that age you are not going to stay up all night flipping back.

Back is best: The back to sleep campaign that started in the 90's brought a 40% drop in crib death rates in the us.After initial resistance, most have come to understand it's value. Thankfully, the most vulnerable period has passed when kids can roll and turn over. Positioners, wedges and other items offered to stop this are unreliable.Infants should be on a firm mattress with no pillows, blankets or bumpers.