Why do my one-year-old baby cry at night?
  • Best Answer
Try check if his/her diaper is wet. He/she might also be hungry. Other possibilities are also heat and constipations
It's very common for even the best sleepers to suddenly start having problems, whether it's trouble falling asleep at bedtime or abruptly waking up during the night. Starting at age 6 months, separation anxiety can cause babies to wake up crying more than once during the night.