Bird wonder weeks is about the big developmental changes a baby goes through, there is a book and an app. It works off baby's due date not the date they were born.
My dd is 23 weeks tomorrow (23 wks fri by due date) and she is just coming up to the 5th leap,
Going through these leaps can make baby cry more, need more attention, change feeding and sleeping habits, and just be generally grumpy!
The 5th leap is "relationships" and is roughly 22.5 - 26.5 weeks (by due date) relationships is about baby learning about "in, on, behind and how long"
I find that wonder weeks really apply to my dd! And think its quite interesting!
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