I find it funny how if the topic was breastfeeding, then no one would say don't look at the kellymom or LLL websites and definitely don't consult an expert, yet when it comes to sleeping and scheduling everyone should throw out the books, ignore those who have conducted actual research, and go willy-nilly.
Edit - Beth, I wrote my post before you did. I do not know your approach, therefore how could I consider your approach "willy-nilly". I'm referring to the people who say "throw out the books" and do whatever you want.
Just because you disagree with the approach does NOT invalidate it, nor should it give people the opportunity to make a mother feel badly about a technique that you oppose or do not use.
Sure the baby doesn't know how to read the books. But babies need to be taught to eat (some need help learning how to latching on, feeding from a spoon, drinking from a cup) as well as learning how to walk, talk, read just like they should be taught good sleep habits and patterns. Would you just let your child how to figure out how to walk unsupervised or would you encourage that behavior? Do you just throw your child a book to let him or her figure out how to read, or do you provide assistance? I feel sleeping is the same way. Routine is exceptionally helpful, but be respectful of the cues and clues you see in each child because, yes, they're all different.
Personally, I never used Babywise but I did use Healthy Sleep Habits, Happy Child by Weissbluth. Two months might be a little early, you might get better results around four months, but if you have had success previously with your methods (no one knows your situation and household better than you), be patient and consistent. You might find that you need to tweak your schedule a little bit. If she can't make it the full three hours, scale back by half an hour or so. If you haven't already, start routines that you follow each time upon waking, eating, playing, then preparing for nap. Your child will begin to understand that, perhaps, when mommy is rocking me in the chair with the lights down low it is time for napping (AGAIN LEADING BY EXAMPLE). The comfort and security of a schedule that is flexible yet predictable helps to lessen anxiety in a child and begins to build trust - the cause and effect of what happens can be very soothing to a child. Another example is a nighttime routine - bath, massage, pajamas, bottle, bed - the baby knows what is coming and knows that it is time for sleep.
You will note that in my suggestion, in no way do I say throw the baby in the crib and let him or her figure it out.
Sad as this might be, we do our bedtime routine at our home now and my 12 month old is to the point where he knows that when the bottle is done it is time to be in the crib - he doesn't want to snuggle anymore, he wants to go to bed. Now, if I wanted to fulfill my selfish (not others...MY) need to force him to cuddle with me I suppose I could, but he wants to go to sleep and knows that we will be there when he wakes in the morning because we have gained his trust. And...it is healthy for him to get the appropriate sleep he needs for proper physical, emotional, and social development, so we put him down.
I'm don't just throw my child in the crib and slam shut the door. I would LOVE to cuddle him, but he WANTS to go to sleep. If it were all about me (like it is for some mothers), I'd force my child to stay awake JUST so I could cuddle him.
Good luck to you and if you (not to mention your older daughter) experienced success with your previous techniques/Babywise, don't let other naysayers make you feel like a terrible mommy because that's how you choose to raise your child.