Is 12 weeks too young? Ds wakes three times a night despite good daytime sleep routine and only falls asleep on the breast or in the pram. When should I start to get tough? Didn't do controlled crying till 6 months plus with first child, she didn't sleep through until 11 months. Am the walking dead at the moment and can't bear the thought of many more months of this (with 2 to look after this time). Someone told me that Michael(?) Ferber is good - is it worth buying his book?