Oh wow, this has been such a tough thing for me to cope with recently. It's awful and I'm sorry it's still so bad for you. I count down the days, to an almost obsessive extent. Well - not almost. I have a countdown on my phone, I keep a diary of what I've been doing so I can figure out how long, say, two weeks feels like. I jot down a lot of notes about what happens to me so I can talk about it when T gets back. I usually don't talk about most of the things but it's a sense of security to have it there.
I wish you all the best. The time will pass.