The safest position for a baby to sleep in is on their back.
According to health care providers, parents should always place their baby on his or her back to sleep—for naps and at night. This position is the safest and reduces the risk of Sudden Infant Death Syndrome (SIDS).
Therefore, to ensure your baby's safety, always place them on their back when putting them down to sleep, whether it's for a short nap or nighttime sleep.