I would say that it is probably due to a developmental leap... DD2 was born the same day as Jakabellas Little Man, and a lot of the babies in our group did the same thing, one bad nights i was up every 45-90 mins, this is the week that they are starting to come out of it, so hopefully we will be seeing some changes.

I have not done anything this time around and i agree with MadB, when i was writing down the times that i was up, it was worse... DD2 is awake because she needs me or a feed, i just stopped tracking it and adjusted MY sleep so that i wasn't so tired.... We had been meaning to get a TV replaced in our bedroom and we did that, so often i will go to bed at 8.30-9pm with DH and we will watch TV in there, that way i can fall asleep earlier and get some additional sleep...

THis is not forever, it sucks when they are worse that when newborn, but it will not stay forever... nap when you can and try and enjoy the cuddles as i find thats the only way its easier for me.

Good luck hun xx