I think you have just made this thread that little bit more controversial by writing that Marcheline! I love routines and wanted to be able to plan when I could meet people etc, so tried my hardest to get both into routines asap.
However, I couldn't get GF to work for DD1 - she was too hard to settle and so she would just fall asleep when she was due for another feed etc. Plus I hated expressing. However, I did get her into her own routine after about 4 weeks - she fed every 3.5 hours from when she first woke and would sleep from whenever I could settle her until I woke her for the next feed - always after 3 hours or maximum 4 hours since the last feed. So if she woke at 6, we'd go 6am, 9am, 12pm, 3pm etc. If she woke at 7, we'd do 7am, 10am pm. You get the idea. If I wanted to go out at 10am, I'd wake her at 6am, so we could do 6am, 9am, 12pm and she could sleep on way to wherever we were off to.
She slept through the night from 9 weeks, which was great. From when she started solids, she could fit into the GF routines, which I do think are great for the point of view that she establishes a long lunchtime nap early on, which is the one that they keep until they are 3 or so.
However, I do think that for the first 4-6 weeks you just have to go with the flow, work or not. And not worry if not much else seems to be going on. They are just so small and haven't read any of the books 
With DD2 - she was easy to settle, so easy to get into the GF routines. However, although she "behaved" perfectly according to the routines by day, she didn't sleep through the night until 6 months. What can you do? Babies work differently to each other.