I thought I had forgiven at about 6 months too. By 9 months, I was really wishing I had taken some form of brazilian marshall arts, or done some target practice, or paid more attention during CSI I was pissed, and it seemed never ending.
You'll get through it, but not overnight. Each stage takes time. Just vent here, or to your IC, or a friend, or whomever you can grab.
It is very normal to trigger and hit a low on antiversaries. Please be kind to yourself.