I completed the newborn course before my first son was born and it helped immensely with improving his nighttime sleep as well as naps. After my second son was born (14 months later…), I completed the 5-24 month class to help with nighttime routines and sleep for both my 22 month old and 8 month old. Nighttime routine for my 22 month old was shortened by about 45 minutes, and my 8 month old started sleeping through the night (7:15p-6:15a) after 4 nights! I have also used the blog just as much if not more than the classes. The blog has been an incredibly helpful resource for wake windows as well as useful tools such as the Baby Merlin suit and sound machines.