She will generally take a whole bottle most of the time but sometimes she'll drink say 5oz and then she'll play a bit and go back and drink the rest. I think her bedtime bottle may be a bit too late for her as she has one at 3 and sometimes she is really tired by half 6 and just wants to go to bed but if I try to give her it earlier she's not interested. She'll maybe take about 4 oz and then sleeps until around 10-10.30 for another bottle. We've never tried her with a 7oz at her df we've always just given her a little to help her through the night. She's not a big baby, in the 9th percentile, so I think maybe I've been trying to fill her up and trying to make sure she's eating plenty because she's so little (although she is following her curve perfectly and is growing well)