I am dealing with the same issue with my 9-month-old right now. We don't have any other kids, so if we close our bedroom door and hers and leave the baby monitor off, we can hardly hear her if she wakes up and cries. But for your other kids maybe you can get something that makes white noise, or just turn on a fan and see if that helps. We are also doing the cry it out method, after nothing else has worked. I don't know if you've talked to your pediatrician, but ours said that since our daughter was breastfeeding for such short time periods when she wakes up at night, that it's just out of habit and for comfort, not hunger. He also told me that despite what you would think, eating more does not make babies sleep through the night. Also our daughter just likes company, because when she wakes up and cries and we go pick her up, she stops immediately and lays her head on your shoulder to go back to sleep. Our pediatrican said that if we keep going in to her, it just reinforces her behavior, so she will cry longer and louder until you come. Our daughter cried for an hour the other night, and has been waking up and crying every night since, but we are just letting her fall back to sleep on her own. She slept through the night a few months ago, but the doctor also said that her sleep pattern is probably being screwed up because she's on the verge of talking and walking. This could be what's going on with your baby. Apparently any developmental milestone can interfere with sleep patterns. Anyway don't know if any of my rambling helped, but try everything like we did! Pacifier, sippy cup or bottle of water, favorite toy, music, mobile, teether....Good luck!