I am not sure about the 4hr waking without eating.
Is the paci in her mouth? Maybe that is it. How much sleep is she getting during the day maybe it is too much and is not tired enough to sleep. If you post your routine, I will see if I can help. Our routine is posted under the post of 8.5 routine need advise or something like that. The routine has been preety much te same since I got rid of the night feeds.
Gage was waking every 4 hrs to eat because he was not getting enough during the day. I would say 12oz is too little and that is why she is waking. But this is a catch 22 because you need to stop the night feeds as they are affecting to the day time feeds. What I did was feed a full bottle (6oz) before 3am and then anything after that was waaaay watered down ( make sure you have a larger diaper
). Then I gradually lessened the 3am bottles by one oz every 3 or so days. I also tried a larger nipple during thhe day, 5-10 min break with the same bottle, sneaking in the food, and offering it in a tippy at lunch. Gage eats about 24-29 oz of formula. Add up the amounts both night and day and see how much the total is. This should be total during the day.
As far as the paci, I have no clue. I am working on getting rid of the Swaddle and wedge
For the solids, Gage is hard to feed too. I have just decided not too sweat it and offer formula as much as possible ( it is higher in calories). He has to come around some time
for some reason he does seem to eat more when I give him a sip or 2 of water or formula between bites
I try not give too much as he barely eats his food.
Oh you know I think I have seen your routine. Does she go to day care? Maybe we can somehow find some more patterns.