Six weeks is a long time if you are used to the support of something regular. My therapist is just away for 10 days and I decided to make an appointment with his cover person just so I had the continuity and in case anything came up. I'm lucky in the sense that I know his cover person and have seen him for full sessions for years so he is familiar with my story. But I have seen another one of his colleagues whom I didn't know and it was fine.

I'm a little surprised to hear about the length. Usually therapists allow you to make some contact with them if they are gone a long time. They understand that their absence can be difficult. If not, perhaps finding other ways to get support in addition to contacting the other person is a good idea. Seeing if there is a support group nearby, connecting with a friend or someone who also understands what it is like to be in therapy, or just posting here and journaling, taking care of yourself. These are all things to do.

Perhaps if you sketched out a plan, even one you don't really follow, will help reduce the panic about the absence and give you a sense that you can get through it.