Waking up at 1 am crying
My DS is 14 months and the last 3 nights he has woke up at one and started crying. The first night I went and picked him up and rocked him back to sleep. The second night my DH went in to calm him down and last night we let him cry. He will cry for about half an hour before settling back down. He has been sleeping through the night since he was about 4 months. He doesn't seem to be congested or anything. The real problem is that he share a bedroom with my DD who is 3 and he wakes her up. Any suggestions of what could be wrong or what I can do to prevent this or help him.