I have a 2 year old that started here a year ago. At the beginning he would wake up after an hour and a half, after about 6 months he started sleeping through for at least 2 hours and recently he's been waking up after an hour. I usually go to him, give him his puppy and put his blankie back on him to no avail. The kids usually don't wake up during this ,amazingly (he's super loud!). So today I let him just cry it out and he went to sleep quicker than if I go in his napping room.