Routine looks pretty good - i can't see an obvious problem there
8 months is quite a common time for separation anxiety to kick in - it sounds like that may well be part of it if she's very clingy? Thinking back to when it started - what first went 'wrong' and how did you respond to it? Not to make you feel bad at all
but often we unintentionally reinforce habits by the way we respond to the (very normal) ups and downs in sleep. It sounds like perhaps she got upset, you soothed her with a feed and now you've both slipped back to that habit again?
You can absolutely use PUPD here if that worked well for her the first time, and you're ready. Just instead of actually picking up, you're now doing just 'put down'. So if she stands and cries for you, go in, lie her down, say your sleep phrase and step back (or out). She's slept independently before if I interpret what you've said correctly? In which case you can use WIWO in combination with the put down -
https://babywhispererforums.com/index.php?topic=62612.0 This worked very well for my daughter at a similar age. We didn't have co-sleeping or feed props to deal with but we did have 'shrieking like a banshee at bedtime' for an hour or more until she learned that we would always come back to her.
In terms of feeding, had she previously dropped night feeds? It's not out of the normal range to still have a night feed at this age so you might want to think about when, and if, you feed her. My two EBF babies had both dropped all night feeds by this point (possibly a 5.30/6am feed which I just counted as the morning feed) but they would have been having more in the way of solids. Solids certainly aren't the answer to all sleep issues though!!! Just something to think about
