I’m looking for some advice from you wise people who’ve been there done that. DC3 is 4 months old, in no kind of day or bedtime routine. DC1 and 2 have not been easy since the new arrival and bedtime has been particularly difficult. DH isn’t around in the evenings due to work. I’m reaching the end of my rope but don’t know where to start with trying to fit a baby bedtime routine/sleep train the baby while dealing with the other two. Neither are particularly good at staying in their bed once they’re down, esp 7yr old. Any advice greatly greatly appreciated 🙏