Juleika gets water together with her solids, so she can get used to the idea there is sth else than the booby to satisfy thirst.
I read they still should get four full milk feeds until they are 8 month old, than you have an estimate.
good luck with pumping and weaning
ps: I will also let nature take it's course, if she stops she stops...if not, not...
but of course, it's much easier if you don't have to go to work!