http://www.askmoxie.org/2012/10/why-the-half-years-are-so-hard-2-12-year-old-version.html

DD is 2.5 years old right now and I remember that it was harder around 1.5 years, too. I think consistently is key in keeping them under control and yourself sane during these ages.

Has anyone else noticed something going on with the half years?