Both of the boys usually sleep from about 6:45 p.m. to sometime between 6 and 6:30 a.m. They've have many phases along the way of having little regressions from teething, being sick, etc. but generally that been their sleep patter for the last 4-ish months.

The last two weeks, E's sleep has gone down the toilet. He's had a few nights that he slept like normal, but most nights we've had tons of problems. One night he was awake from 10:30-3 a.m. He was very awake and was playful and happy as long as you didn't try to lay him down. Other nights, he seems sleepy and will fall back asleep if we're holding him, but will wake up the second we lay him down and start screaming. Leaving him to CIO is not working, at least not in the amount of time we can let him cry without waking Finn. We've tried teething tablets, ibuprofen, and giving him a snack. All seem to have "worked" at various times, but other times have no impact whatsoever.

He's happy during the day and naps fine. He's eating fine. No temp. No major signs of teething, other than a little drool and chewing.

Is there a mystery 15-month sleep regression or something? WTH is going on with his sleep? He's my good sleeper, and this mama needs him to get back to that stat. Help!