My DD is also 11 months old and we are doing 3 milk feeds a day. I am thinking that perhaps trying to feed her frequently during the day could actually be causing her to take small feeds instead of nice big ones. We do 7am - 2:30pm - 7pm/before bed. I think if you reduce the number of daytime feeds and concentrate them together, she will take a bigger/better feed before bed and that will eliminate many of her first few wakings.
I agree with this, at 11 months my DD was on exactly the same bottle pattern and no night feeds. From 6 moths they only need 20oz of milk to get what they need and this included the dairy in food, from 1 year they need 12oz of dairy. Your DD is having over 30oz in 24 hours, plenty more than she needs.
I think you have a snacking/ grazing issue, you have taught her to eat little bits often so she is never getting the chance to get properly hungry. If you think about it, if you ate at 9.30pm, 11pm amd 3.45am you wouldn't be hungry during the day either!
10 bottle feeds during 24 hours is a newborn patten, 3 bottle feeds is expected and drops to 2 when they hit 1.
During the day I would give a bottle at wake up, then breakfast. Before her morning nap offer her a snack rather than a bottle then lunch after her nap. She can have another bottle before her afternoon nap and then a snack if needed on wake up. Then she gets her evening food and a bottle before sleep.
I think her bedtime is probably a bit late which is why she is waking in the early part of the evening she's a bit OT by then. I'm not sure she needs solids at 7 either, I would do bedtime milk by that time and put her to sleep.
She really doesn't need the feeds overnight, looking at what's going on I would reduce all those bottles at the same time so offer no more than 3oz at each one and resettle. Then offer 2oz and resettle, then 1oz and then don't give her any more milk. You can offer a sip of water if you think she may be thirsty but no milk. You will get a few rough nights while she learns to adjust, but she will.
Does she go to sleep independently for all her sleeps?
You won't see an improvement in the day time straight away, it will take time for her appetite to shift to the day. When you offer snacks you could offer a small amount of cheese or a yoghurt so that she is getting dairy from food as well as milk.
How is she with solids - is she self feeding and eating the meals your other kids eat (minus salt, sugar etc)?