My 9 month old breastfeed about 6 times. I'm not sure how much as I latch on.
He eats very few occasionally when he's fussy n it could be due to teething pains. On some days he eats more. Is he refusing everyday or does he eat lesser only on some days? If its only on some days, it's normal. Just increase the breastfeeding to give him more nutrients from milk.