Hi Ninah,
As bellybelly has a gentle parenting focus, there is a general sentiment against routines and Save Our Sleep and Tizzie.

However, I followed the routines for my now 19mo daughter and it's been fab - she's an excellent sleeper and still sleeps 12hrs overnight and 11/2 to 2 1/2 hours during the day. I'm glad their working for you, let me know if you want to troubleshoot anything.