Getting a newborn to sleep can be a challenge, since their sleep is so different from ours. But the best offense is a good defense. Knowing as much as you can about your baby’s sleep will help stave off any bumps in the road.

Seeing your newborn grow is exciting for parents – their first smile, the first time they roll over, or that first baby giggle. But there’s one milestone many new parents dread: the four-month sleep regression.