Are you remembering to breath deeply and do some grounding stuff? Like noticing your feet, sounds, what can you see? I'm sorry it feels so tough right now but remind yourself that it will pass.

Also with a 4 week break sounds like you need a session or 2 with you T to just practice feeling safer there with him. Can you ask him?

I hope if you are working on stuff you have been avoiding that you have more regular sessions booked in.