Alamak, a few of us mums in my group also worry about this sama-sama! Generally toddlers that age boleh lah vary from daily to every 2-3 days depending on diet, activity, and individual tummy, but if your little one is comfortable, playing normally, and the poop isn't hard like stones, you're probably fine. Just check with your paediatrician lah to be sure, especially if he seems uncomfortable or the consistency berubah drastically, better safe than sorry with these things kan!