I want to second what clazzat said.
I remember that once in the support thread for parents to touchy babies there were many mothers who said that they don't use the sleeping cues (there was a mom who said her bub is yawning when tired, when is hungry, when bored, when is 10min awake - yawning all the time!). So in this case make the clock you friend. Start with a short A time and go up with it slowly every day till you get the right time. Mind you, the first A time of the day is usually shorter.
And yes, keep WD to a minimum. Ours was like 2min. Also make sure that the room is dark enough, that is such a simple thing, but it made wonders for us.
As you said, she is very very young, don't forget to enjoy her in the pursuit of the perfect nap.