There are many reasons why a baby refuses to close his eyes, even though it is already deep night outside.
Children should not be allowed to stay awake for too long for their age or sleep much less during the day than they should.
Contrary to popular belief, oversleeping will not make your baby fall asleep faster, but on the contrary, he will sleep very lightly, wake up often, and get up before the clock reaches 6 a.m.
This reason is diametrically opposed to the previous one. If the sleep pressure is not so strong that the baby wants to sleep, he will lie quietly in the crib, "talk" in his own language, play, but under no circumstances fall asleep.
In this case, the solution to the problem will also be to adjust the regime - although the child should not overdo it, it is also not worth putting him to bed too early.
If you have accustomed your son or daughter to rocking, a pacifier, a favorite blanket, etc., you should not expect that he or she will be able to fall asleep without traditional rituals.
By the way, these methods should not be considered a panacea - sometimes they stop working, which is why the process of falling asleep will inevitably be delayed.