New parents are often warned about "The 3 month sleep regression" or "The 9 month sleep regression."
Really, you can substitute any number you want and you'll have no trouble finding corroboration that there's a sleep regression that happens around that age.
But in my experience, there are causes for sleep regressions that have nothing to do with age.
Today, I'll be discussing the three biggest reasons why your little one might suddenly break away from their carefully crafted routine, and what you can do to help get them back on track.