my bub is a whole lot younger than yours but it works a treat for her. she started off having to be in a deep sleep to go to bed - now i can put her down awake (but drowsy from feed kwim?), put her light show on, and she'll babble herself to sleep rather than screaming the house down. we have only had to rock her to sleep once in the past 8 weeks - and that was in the week after her injections...