thanks cally. i think that's made me think that i might actually have more milk than what i thought. max is usually on for 5 mins each breast before she starts to grizzle and tug. so a total of 10 mins and then we give her formula. been mixing 100 ml bottles but her consumption varies. sometimes she'll finish the bottle but other times she'll have maybe 40 mls. but as i said, these days, she's been rejecting the bottle. i've changed formula and she's been having them again but then i'm now thinking that i might actually be able to go formula less. oh, when you pump (if you ever do), how much are you able to bottle off both sides?