We have a tooth!

Elaine

My 5.5month old got his first tooth. What the hell do I do now? It’s like 50/50 articles about using toothpaste with fluoride vs without. And I can’t put him to bed with milk, I have to brush his teeth after he eats and before he sleeps? Idk what to do. But I want to get it right, so can someone tell me what the correct thing to do is?