Hello. Girls, could you please tell me what to do? My son is 1.6 years…

Hello. Girls, could you please tell me what to do? My son is 1.6 years old and has small yellow spots on his front teeth. We went to the dentist and they said it's caries and we need to treat it. But everyone around me says he's too young for such procedures. Honestly, I'm scared because it will be a trauma for the child. What would you recommend doing? I'm also thinking of going to a couple more dentists and get their opinion. I want your advice as well.