Am I reading it correctly on the MRT site that kids fares don't exist for the traveler card? And it goes from free (below 0.9m) to full fare?

We need 3 day passes for 2 adults, 2 young kids and 1 <0.9m toddler.

We plan on going from Copthorn to the zoo and back one day, a day around the tourist spots (bay area etc) and a day at universal.