Hey Jen,
You're not alone in this. For me it's almost 15 months and indeed it feels like an eternity. I think that is because life is so very different now, it feels like another world, another life. Life together seems a lifetime ago. I also think that 27 months does mean something.
We start out by counting the moments, the days, then the weeks, the months, the three-months, the halfyears and finally the year. It takes time to get there, personally I'm far from there. I'm still counting the months, occasionally slipping back into the weeks and even the days. But no matter what I count, the passage of time reminds me that he is gone and that that will not change.
The time between our life together and the present is only getting bigger and bigger until one day even my memories will feel distant. I dread that day. I dread the day where it will feel, on some level, like he never existed, like it was all a dream. I'm already forgetting how he smelled or how his skin felt. I'm forgetting things I never thought I would forget. I'm trying to make a memory book now, for that very reason.
All this to say - you're not alone and we will find our way through this.
Gentle care,
Ruth