Too lazy to count

We use months up until 36 months because it's a time of such rapid development. Ns explained that already, but he used an earlier age.

The key part of your post, which contradicts your own points, is: "up until 36 months".
6 months, 12 months, 18 months, 24 months, 30 months, 3 years.

Oops, you're right. I meant that by the time you get to 3 years it's appropriate to stop using months. Sometimes we go up to 30 months, and sometimes 35-6. I should have probably waited to post until I was more awake. I still don't know if this is coming across as clearly as I want it to.

I thought they were just exaggerating abiut the 36 month post because I've seen so many posts bitching about baby ages