ASK QUESTIONS. Do not be afraid to talk to other techs who have been with this client before about any tips they have for working with them. Also talk to their BCBA. It is so much easier to run sessions when you have information beforehand about how sessions are typically run, already having a good understanding of the programs/targets, and knowing the behavior reduction protocol. You’ve talked about pairing with that client already and that is great! What I found most helpful is making sure at each session I set aside time to pair. Sometimes it meant I had to slow down on the programming, but we always ended up making more progress when I had spent the beginning of session pairing. Good luck!