Hello,
Thank you very much for your words. Being our first daughter, it can be quite confusing. We don't really know if we are doing things right or if it is a matter of timing, repetition... they are always changing!
Anyway, without giving up we endured in the routine and the day after went on better. She seems to still need a lot of help making those sleep transitions and that is becoming hard on us, almost no Y time. I guess that about 4mo it will get better on its own.
As for those wonder weeks, I do have a friend who always said her DD would get 2 or 3 rough nights just before talking, walking, or some other major milestone!