Speech delay

Am

My son’s bday is 3/25. He only says one word and knows what it means- milk. I can’t get him to say mama or dada. Someone people say to wait on early intervention and not worry but others are telling me I should. He started walking by 10 months. He has always been a quiet baby. Anyone else in the same boat. Have you gotten early intervention started? Without home visits I’m not even sure if it is worth my time.