Child and Youth Health SA promote what Naomi said about keeping things low key at night. They also say that it is ok to try and keep bub awake a bit more during the day by having some gentle play time after feeds. This is supposed to help them sort out night and day. Lots of info on their website.

If you are interesting in routines you may want to check out Save Our Sleep by Tizzie Hall. I only got this book when DD was about 9 months old, but I have implemented some of her strategies and quite like it.