My LO has quite good sleep rhythms in terms of a routine although of course we have ups and downs. I have been loosely following a routine since a young age and he is now 5 months. Some evenings when he goes down, he doesn't wake up until 1-3am. So gets 6-7 hours solid. Other evenings, he can be super restless and wakes many times between going down around 7.30pm and when I go to bed around 11pm. The first wake up is after 45 mins (of course!) but there's no pattern to the rest of them. Any ideas as to why i sometimes can't get him to sleep for that long chunk? If there's something simple I am not getting right consistently I would love to know!