Review #2 of the day for resources-written-by-horrible-people whose actual advice about babies seems like it’s super helpful. The author of this book is the worst kind of person to support, but her tips for sleep training are some of the most sound/well supported (begrudgingly) by my friends who are new moms. Very happy to share the PDFs and guides with others who might be in the same boat (I.e. looking for sound advice, trying not to financially support people with problematic values).