First of all congratulations.
Rudis indeed can eat it's own young. I never see it at my place but know somebody who saw an adult shooting at a juvinile.
I keep the baby's at cages of 25x40x60 (WxDxH) in cm's. up to 40x40x60 or 40x60x60. Depending on free cages and number of babies. I keep them together for the first three months. At this time they should be seperated as males then already start to atempt to mate with the females.
The first weeks I mainly feed them fruitflies. Later on I start adding crickets, roaches, beetles etc. These chameleons love differnt kind of foods.
I spray them with water early in the morning.
good luck with the babies.