E is still going with a bottle of milk (formula) after bath but before teeth brushing in the evenings but just has a small cup of cows milk in the mornings now and has done for some months (I can't remember exactly when).
Two nights ago after a no nap day E fell asleep in the car and we couldn't wake her so put her straight to bed without mlk and she slept for 13 hours so I am feeling like we might get rid of this evening bottle soon.
I know all the recommendations say to get rid of formula earlier, and E certainly eats a good amount of dairy in her diet, but she was still on three bottles at 14 months and eating a full diet of solids and has weaned herself off the bottles much as you describe Ruby is doing at the moment. I think this is the right thing for E and I wouldn't worry if she cut the last feed but I'm not going to rush her either.
hth x