My son was very sick 2 weeks ago and only took around 4oz of milk every time. But he was willing to take congee. Therefore, I used soup to make congee everytime. He loves it so much 'cose it is veyr delicious. Maybe u can try. Now, he is fully recovered and takes around 7-9oz every time and of course, one bowl of 多料congee every day.
See if it is useful to u. :-P