My daughter is 4 months old (ff) and the sleep training seems to be working very well. I've introduced a new swaddle “Love To Dream Swaddle” with the arms “up”, which is advertised specifically as a “Transition Bag”: I thought this could be useful in order to leave behind the newborn swaddle (with the arms down and tightly tied up) and go slowly towards the sleeping bag. I've started using that Love To Dream swaddle during the naps, which was a success. But, during night time, my baby started waking up again.
I just wanted to gather some feedback about transitions between swaddles and understand what I can do to help her go through the night again without the occasional waking up. She didn't need a feed during the night before, and now it seems that it's the only thing that would help her going back to sleep with that new swaddle. Should I just let her be “vocal” (by that I mean that she's now crying but still making quite a lot of noise) when she wakes up and let the self-soothing take over, even if it lasts more than 40 min?