We roughly followed the EASY routine and it worked really well for us - so well that its only now at 5mo that DD is starting to grow out of the routine we started at about 6w!
EASY is very easy (yes, I know ) to follow as it isn't time restrictive. We fed roughly 3 hourly, followed by playtime and then a nap. The playtime just gradually lengthened as DD got older. However naps were wherever and however DD would take them, as she is not a great napper - so pushchair, on me, maybe one a day put down in her cot.
Our routine is generally about this:
Wakes up whenever she wants to really, but is roughly between 7-8
8am - bottle
11am - bottle
2pm - bottle
4.30pm - bottle
7pm - 1st half of bedtime bottle
7.30pm - bath or massage or story
7.45pm - rest of bottle, in the bedroom, with the light dimmed
11pm - dreamfeed
She self-settles happily, even for daytime naps (the only issue with cot naps is that she wakes up after 30 mins and can't go back to sleep) and sleeps at night from 8 until about 5 (though at 5mo she now starting to get a little more unsettled and sometimes wake as early as 3) and then goes off again for another 2 hours or so.
Routines aren't for everyone, but if you are interested in trying I'd recommend EASY or the Supernanny routine, which is very similar. For naps just start watching for the tired cues and put them down then, that might work better than instilling specific nap times at her age. Personally I'm a fan as it made me feel confident that DD had eaten enough and had the right amount of naps to happily go to sleep at night.