A one and a half year old baby who has difficulty sleeping may be due to some calcium deficiency. You can take a blood test for trace elements to see how the calcium, iron and zinc are doing. It is also possible that the child sleeps for a long time during the day and therefore has no sleepiness at night and has difficulty falling asleep. It could also be that the child is not feeling well and is sick. Therefore, it is better to go to the pediatrician to have such symptoms checked, and not to use drugs blindly, especially not sleeping pills, but to pay attention to them. You can give your child a head massage, do not sleep too much during the day, do not hold the child to sleep, so that the bad habits, but also prone to sleeplessness.