Is it possible to see someone else for a few sessions just a someone to touch base with and manage through? I did that once while a therapist was away for about a month. He introduced me to another therapist in his office so I had someone to meet with (he wasn't available for any kind of contact while he was away). I met with that other therapist I think twice during that time. We didn't get into anything deep, but it was helpful just knowing she knew who I was and was there for support if needed.

Otherwise I just kind of consider their time away as a therapy holiday for myself. I used the extra cash to have some fun: see a few movies, go to a museum, eat out a bit more. I figured there would be times when I would be the one taking a vacation or something and to be away, so I'd find a way to manage then (probably by being busy), so I just kind of made that time work the same way.