Things have changed so much in a month (since posts here and here), Maelys is now doing 13 hours nights (with one feeding in the morning usually), which makes Daddy and Mommy very proud. She always has been quite a good sleeper, but the big difference is that now, we don't spend hours holding her before putting her to Bed, we do little ritual ("red light", a book, a bath, a big hug for daddy, a small feeding with mommy), and then straight to bed.
Tonight is not as rosy since, as I write, for maybe first or second time we had to pick her up, and Caroline is re-feeding her. Indeed she started crying, so she was probably still hungry.
The first night she didn't cry at all, the second night she cried for 40mn before doing a full 12hours, and the first week was tough, but much better for our general fatigue.
In France, I guess this is the usual method of doing things (just guessing, since we didn't have a baby there), but here in the US there is also the "Pantley's" no-cry method for bed training. I read the book and I was ready to go with the method which consists in lots of tiny steps to allow baby to go to sleep without crying, but eventually we didn't do it, because Caroline who had read many other books didn't think she could make it (too tired, for all those steps), and because she also learned and appreciated the benefits of other ways.
Most of the time, now, she can go to bed at 7, 7:30pm without tears and she would wake up between 8 or 9am. If we are less lucky she will cry a bit but not more that for 20mn and it's not big cries so we're pretty happy.
The challenge now is to get her to do naps (3) during the day about the same way... Since she sleeps so much during the night it looks like what appears to work best is small naps, it's rare that she naps for 2 hours during the day, usually it's more 1 hour, and in the afternoon as little as half an hour.