Yup I use it and like sourskittleashnut said, my daughter tends to leave some as its too frothy so I usually make up a little more than I need... You can make it all up in the same bottle if it fits
I've used this for extensively for DD, I make 240ml for her often, in the same bottle it's not a problem
By the way, she always leaves 30ml of this it's so weird, I think cos it's so frothy at the end she doesn't like it!