Hi Zacs Mum
Dunno if this will help, but I know exacty what you're going through.
We had heaps of trouble with Alynta when she hit about 5 1/2 months and stopped sleeping through. As a result of this and me getting tired I got lazy and started pulling her into bed with me then we'd both fall off to sleep. The problems really started when she wasn't able to go back to sleep without being in bed with me andwithout a feed. The tireder I got, the worse the problem got and she began waking even more (anywhere from 3 to 8 times in a night) Both she and I got tireder and grumpier until finally a friend loaned me a book called 'Babywise' when Ally was about 8months.
What a Godsend, it guides you through what they call PDF or Parent directed Feeding and within 1 1/2 - 2 wks, she was not only sleeping through, but was also having structured daytime sleeps aswell. Oh Happy family!
Alynta is now just over 12months and everything is still going great because the book helped us learn and lay some basic foundations. Her grandparents are amazed at the difference in her and our sanity has been saved. It also solved our clinginess problems.
You may need also to check out the second in the series which is Babywise 2 and deals with 6 - 15 month olds more specifically, but the first one will give you all the foundational info you need.
Hope this helps, would love to know how you go. If you want anymore info, let me know.