my daugther also 10 months old, she doesn't like to eat congee. We use fish soup to cook congee and add some sweet food like sweet corn, pumkin and feed to replace the milk. She only eat little. But we also will feed milk after the congee. When I'm home, she doesn't eat the congee.
But she like to eat fruit, bannane, pear, apple also bread.
try other food instead of congee, may be something she like.