Hi Harubi,
Forget to answer your questions. I started with 3 tbsp of cereal + 60 ml 2 weeks ago and added one more spoon last week as she preferred thicker texture. This week, I make 5 tbsp with 70 ml. That meal cas last 3-3.5 hours. Plus I give her half pear as well. It can replace one bottle of milk during the day. Thus, I think Takumi can take the whole pack. (Each spoon is level spoon only.)
I will finish the rice cereal in a few days and will then replace with congee. She had it yesterday and looked ok. May stock up rice cereal later as I will travel again end of this month. By that time, I prefer my maid to do cereal as I wonder if she can handle cooking congee while taking care of my baby. U know she does not use her brain.