I'm combi feeding my 8.5 month old.
As background, she was 50th centile for weight when born. However, by the time she was 4.5 months old she dropped to midway between 9th and 4th.
Fortunately she is now back at 50th centile, but I'm concerned we're giving her too much formula and she'll be over fed. Generally, she gets formula at night and breast fed during the day. She gets about 100ml at 7pm, dream feed of 100ml at 11pm and 210ml when she wakes at some time around 2-4am. Sometimes I can get away with just breastfeeding her, but sometimes she needs formula and boob for comfort to settle.
She then usually wakes some time between 5:30am-6:30am and is breastfed while we co-sleep.
I think she's getting far too much formula and we should limit her to 300ml overnight, as she's getting almost a full day's amount of formula as well as being breastfed. My DH disagrees. We're doing BLW and she doesn't eat much actual food.