I really wanted to put my DS into a routine but he wasn't having any of it! he has not read Gina Ford, or the Baby Whisperer or anyone else...I found this very stressful and a cause o much anxiety for weeks!
In the end, by about 12-15 weeks I decided to give up hoping he would do what Gina said, and decided to just watch his cues (ie. when is he tired? put him down for sleep! Is he hungry, feed him!), and lo and behold, now at 20 weeks, we are in a routine, albeit one of his devising which i would never have chosen
Things tend to happen at roughly the same time every day, within an hour, and I have not done anything to affect this: but he basically has 5 bottles per day, and 4 naps which can be 30 mins or 40 mins long.
It's not perfect, I would really prefer him to nap for longer, but he just won't so I have given up ifightin it. This is his routine, and he seems ok with it, so I just have to work round it I reckon!