Eh, at that age it really varies lah, some kids go once a day, some go every other day, and honestly a few of us mums have toddlers yang berak 2-3 times sehari depending on what they eat, so don't stress too much as long as the poop looks normal (not too hard or too loose). The important thing is consistency with your child's own pattern, bukan compare dengan other kids, and that he's not uncomfortable or straining. If he's eating well, active, and the motion is soft to normal, you're good!