I had a similar experience at my local
sleep center (NJ). I didn’t sleep a wink that night. I had to re-schedule another test and this time I asked the nurse whether I could take anything to help me sleep. She gave me a tablet – don’t know what it was but it helped me sleep! They discovered I had sleep apnea and went through a CPAP study. Hate the machine – but it’s so much better than not getting a good night’s sleep.