Please share what your doing/did with your 15mo for sleep. 1 nap or 2, bedtimes and wake up times. Can't work out where we are going wrong and have an overtired mess on my hands for the 5th day running. over night sleep has gone from 12 to 10 hours. It's not his teeth, he has a cold but not the worst he's had and is walking if any of that makes a difference!! Help me please!!