Hey Tan. Tough call matey. I hope tonight goes well for you.
This sounds exactly how Natty was at that age. I know how thoroughly exhausting it is and I really feel for you. I too found that her waking was not about food, but about comfort/behaviour (not as in 'naughty behaviour', just a behavioural pattern she developed). I suspect that Izzy's waking that many times a night would be due to behaviour too, but of course you're not going to know for sure until you give solids a go.
Personally, I tried cutting out the 9-9:30pm feed first. I'd just give her a big cuddle and she'd fall asleep again after a little while. Then I'd go straight to bed and she'd go through til midnight or so, then 2-3 hourly after that. This worked for us for a few weeks.
GL with it and I hope you get some lovely sleep tonight!