Hi there! I am having the EXACT same issue on the same feeding schedule...although because DD takes so little at the 11:30, I try to give a little before her nap (not feed to sleep) and DD takes only a few oz and then try again after her nap and DD takes only a few oz.
I am considering dropping the 11:30 bottle, moving solids up and then giving a bottle before nap time (not feed to sleep)...so 3 bottles in a day more spaced out. 9 months seems young for 3 bottles, but if they are refusing the bottle, perhaps consolidating the bottles will encourage more drinking?
I'd like to follow along and see what responses you get