I agree with reading the book, "Healthy Sleep Habits, Happy Child" by Marc Weissbluth, M.D. We used it when we were trying to get our dd to sleep through the night and it had great ideas for developing routines for that (including working on our daily sleep routines).
I have heard nothing but negatives about "Baby Wise" (the guy who wrote it isn't a doctor, but is a total nut!!!), and what I read of it, I agreed...bad stuff!! Google Gary Ezzo (the author) and you'll find several things that are scary (look here: http://www.ezzo.info/biblio.htm for example!) about his stuff. in short (or long..), I vote stay far away from Baby (or any of the Wise) Wise books. FAR AWAY.
At 11 weeks, your baby might not be able to control her sleep yet...but if you make a routine that will work for you and just keep at it (like Anetta said), assuming it doesn't totally go against what your baby is telling you she needs, that could just work (with a lot of effort from you!).
Good luck! This parenting stuff is hard, I know! :)