Sometimes you will have to do trial and error again. Don't feel bad when you have to spend time figuring out the quirks--all of us have to do it, and it is new with each child. My two children have been very different.
Don't get discouraged by the idea of a dynamic situation--I have found it gets easier to troubleshoot as they get older. There is always something with parenting. Why is my baby waking early from naps? Why is my 18 month old suddenly so disobedient? Why is my 2 year old throwing tantrums? Just be ready to work on it. With Babywise, you have the tools to fix the problems!