Im giving Happy Times. Not many places sell. Selected NTUC, Cold Storage and organic shops.
The box looks like this - Healthy Times Premium Organic Baby Cereal, Wholegrain Oatmeal, 8-Ounce Boxes (Pack of 12): Amazon.com: Grocery & Gourmet Food
You can try the 1 grain first before moving on to 2 grain (mix grain). There are oatmeal, barley and brown rice flavour.