I know how you feel.At 7 months my daughter Baylie was waking around 4 times a night and out of ease I was feeding her back to sleep. Now she is 10 months and is sleeping 10-11hrs without a feed. So don't stress too much because things change so quickly with babies! They soon sort themselves out I think!
But I know that doesn't help you for the time being so maybe try these:Does she use a dummy? If so, is she losing it and waking because of that? Try pinning it to her pj's with some ribbon so she can find it again. Is she moving around the cot? I introduced cot bumpers which reduced Baylie waking to once or twice a night immediately. If it is hot and Baylie wakes I offer her water before milk, just keep her sippycup near her cot.
Also, do you feed her to sleep, or does she self-settle in her cot? I am just on the verge of putting Bay down awake and letting her settle herself at night and I believe thats makes a big difference to how she sleeps at night. It could be that your bub is just waking(like all bubs do) and just cant get herself back to sleep.
What sort of solids are you offering her at dinner time? As the size and substance of her meals increase she should be satisfied for longer and not be waking hungry.I think it is totally acceptable for an 8 month old to still be having a night feed, (even though alot of my friends who are mums tried to stop this at around 3 months!!) Breastfed bubs dont stay full for as long as bottlefed bubs and it could be more of a comfort thing for her than a need for food.
If you want to talk more about this email me at- **link removed**
~ Bays Mama