My 7 month old daughter (approaching 8 month) woke up at night and stayed awake in my arms for over 2 hours for the past 2 nights. She's sleep trained, falls asleep on her own, takes 3 good naps during the day, and still have one feeding at night. Although, some nights she's able to do an 8 or 9 hour stretch without nursing. We put her to bed between 7:30 and 8:00 pm. Why do you think she's waking up like that? When she woke up, I nursed her, rocked, bounced, sang, shushed, put her in her bed, kept her in my arms...I think I've tried everything but she can't fall asleep until she's exhausted after more than 2 hours. She doesn't seem to have any discomfort (ruling out teething), she doesn't seem very hungry either. She's just plain awake, like if she was jet-legged. What can I do different when/if this happens again? And what can I do to prevent this? Thank you very much!