My T goes away every year for four months.
Usually we spend several sessions winding down and coming up with a plan for while he's away. Our last session isn't anything heavy, but I'm still paying for it so I don't want to waste it, so we do more just wrap-up work and make sure I'm in as good a place as I can be. Last year was hard because I'd just been released from the hospital two weeks prior, and then he left. I'm hoping this year will be easier.