Hello everyone! It's been a week since the child wakes up every hour o…

Hello everyone! It's been a week since the child wakes up every hour of the night like a baby. Every hour. Before he used to sleep normally every 2-3 hours and wake up. But for several days now, the child wakes up every hour. What could be the reason? The house is not hot or cold, stable temperature. I have already forgotten how to sleep at night. Is it normal?