Babywise

My first baby was an angel newborn. Ate a whole bottle every 3 hours and pulled her first 11 hour stretch by 8 weeks. She was easy to put on a schedule and was simply a dream. Now, 53 weeks later, I have another newborn. She is also a good baby, but I feel like she's much more of a "normal" baby. She doesn't always finish bottles, it's taken me weeks to put her on a consistent feeding schedule, and her nights almost never look the same. I'm exhausted and getting depressed.

I've heard about babywise and I've recently bought the book. I am allllll for schedules and routines and think that they are both essential for making a happy child. My baby will be 8 weeks tomorrow, so I know there shouldn't be any very intense schedule now...but I'm interested in babywise. Is it too late for me to start it? Any advice is welcome! Also, if routines don't work for you....thats totally fine. It's just what works for me and my family!