Hi raisingmrc, I think they need 10 hrs from 6 months, and three hours of naps (we don't manage this mostly).
The day is supposed to go like this:
Up 6am
Breakfast, play
Nap 1 hr 830am (wake up if sleeps longer)
Play, lunch
Nap 1230/1ish, for as long as poss! Dd does about 1.5 hrs
Power nap 10-15 mins at 5 if really tired
Tea
Play
7pm feed on sofa
Bath
Pyjamas
Story
Bed (shush/pat)
I've been introducing this gradually, moved house so wasn't up for too drastic changes all at once and it has worked surprisingly well. I never thought i could get her to bed without at least feeding just prior to bed, but I finally got the courage to try last two nights and she has gone down very easily without any fuss. Am shushing/patting for naps too and she gets more upset about that, but am perseveringly and want to be consistent and she does settle, but there can be a lot of crying, which reaches a crescendo just before she goes to sleep.
I haven't started the last bits yet, which are to give a dream feed and to gradually wean of the night feeds. Idea is you pick a gap to start with e.g. 2.25 hours and refuse to feed if they wake before the interval is up. Shush pat instead, then shush pat back to sleep after feeds. Gradually increase the spacing by 15 mins every three nights (might be four, can't quite remember).
At the same time, reduce the time of feeding by 1 minute per night.
At the same time, gradually reduce the help to get to sleep. Start with shush pat, the shush with still hand, then just shush, I think you reduce every 4 nights. Eventually you start moving your chair out of the room.
This is all quite complicated and we are going to have to write out a day by day plan! Dd already went to sleep in her cot at night so we are skipping some stages of gradual retreat and going straight to shush pat.
Dd has really taken to the new routine, it obviously fits her natural rhythm much better than my haphazard attempts. I have been surprised how well it's worked. I have also been utterly amazed she has gone to sleep so well at night. She is now waking twice, around midnight at 5am and I hope to eliminate the 5am one once I introduce the dream feed. I need to check with the sleep lady about the intervals because when we spoke, dd was waking every 3 hours so will prob extend that.
I think that having confidence in what you are doing and being consistent has helped me tremendously. Knowing that dd will eventually go to sleep being shush patted, keeping calm and quiet and not talking to her or gettin upset myself, knowing that she is tired and needs to sleep, knowing that in am doing the right thing in helping her learn how to sleep in her own. I am actually starting to believe that it's possible she can sleep through, because everything else she's said has been right!
Going to introduce dream feed next two nights, then weaning of the night feeds next week.
Sorry for uber long post, there's a lot in the plan and it's too complicated to explain briefly. Hope it helps though.