DD is 7.5 months and has been a terrible sleeper since 4 months. I assumed she would grow out of it, but almost 4 months later I am at breaking point. She mostly wakes up every hour through the night, but occasionally will go down at 7.30 and only wake at up 11, 1, 3 and 6. At these times, she wakes up for a feed and sometimes will drain 7oz but other times just have a couple of oz. I'm sure she can't need it at this age. It's very easy to get her to sleep in the first place, but once she wakes up that first time she tosses and turns all night and doesn't seem to go back in to a proper deep sleep. She has a dummy and seems to wake up quite often when she spits it out (until 4 months old, she would spit it out and stay asleep). Would it be worth me weaning her off the dummy? This doesn't seem to be the main cause of her waking up, but does add to it.
Up until 4 months old, she would sleep from 8-11, wake up for a feed then go back down until 6am, so I know she can do it. She will sometimes nap through the day for up to 2 hours.
I spoke to my HV about it around a month ago, and she suggested adding lunch as she was only having breakfast and dinner then milk through the day. I have done this and made a conscious effort to get her to feed more through the day and it's made no difference.
I've been putting off moving her in to her own room as it's on another floor and I know I'll either be up and down the stairs all night or end up sleeping on the futon up there forever. However, we are painting her room this weekend and moving her ASAP to see if it makes a difference. I don't have much hope though!
A friend of mine has suggested sleep training. I do not want to leave her crying, as I live in a back to back terrace so have neighbours on both sides and at the back of my house. Two of these have young children so I'm very wary of making a lot of noise. I've looked at the No Cry Sleep Solution but it seems geared towards babies who have problems getting to sleep in the first place (eg. Needing to be rocked to sleep). We don't actually have a problem getting her to sleep in the first place, it's the frequent wake ups that are the problem.
We can't afford a sleep consultant unfortunately 
Any suggestions would be very appreciated! I am sick of feeling like a zombie every day from no sleep.