I am a SOS fan and I have an excellent sleeper. That being said I didn't start on the routines until bub was 8-10 weeks as I couldn't be stuffed with all the expressing involved. And I'd rather go with the flow in the early days to make sure my milk supply regulated properly. I used to have so much milk I'd feed off one boob each feed....which used to take 45 minutes. Each lady might be different though, some might need each boob to be suckled at each feed to keep supply up. I don't think the bf'ing guidance is an essential part of the 'saving your sleep.'