Sleep onset problems in children 1-3 years

Sleep problems in children 1-3 years: Behavioral resistance

If in newborns difficulty falling asleep is related to physiology, then in toddlers after the first year behavioral and psychological reasons come to the fore. The bedtime routine can turn into a multi‑hour battle that exhausts both child and parents. This phenomenon is so common that it has been called "behavioral insomnia".

Why does the child fight sleep?

Several key aspects of the child's development at this age underlie this resistance:

• Struggle for autonomy: The child enters a phase of active self‑assertion ("I can do it myself!"). Refusing to go to sleep is one of the simplest ways to demonstrate will, control, and independence. They test the boundaries set by parents.
• Separation anxiety: Going to sleep is the longest separation from parents in a day. The child may fear being alone and will try to postpone this moment in every possible way.
• Development of imagination and fears: The child develops first fears (darkness, monsters) that intensify when they are alone in the room.
• Fear of missing out (FOMO - Fear Of Missing Out): The world is so exciting, and sleep seems like a boring activity. The child fears that while they are sleeping something important will happen.
• Incorrect sleep associations: If the child is used to falling asleep only under certain conditions (e.g., with a bottle or during rocking), they cannot fall asleep without them and will demand their recreation.

Role of schedule and rituals

Often sleep problems are the result of a poorly structured schedule. Too early bedtime (when the child is not yet tired) or, conversely, too late (when they are already overtired) leads to resistance. Creating a clear, calm, and predictable bedtime ritual helps the child's nervous system relax and prepare for rest. More details can be found in the article "Forming bedtime rituals".