If you are waking every 2 hours that means something is interrupting your breathing and your body's life saving mechanism is to wake up when you don't breathe. Yes, I feel better. I dream several times. You must be in REM sleep to dream but if you can't stay asleep long enough, it isn't going to happen.

You will still wake up if you stop breathing. That's why people who are severely drunk and have sleep apnea die in their sleep. Their body can't wake them. The attendants at sleep study are assigned one person each. They watch you all night. If you go a dangerous length of time without breathing, they'll come wake you. But that's what sleep studies are all about. Fixing the problem.

If you meant something to help fall asleep in the clinic, then they will probably prescribe a small dose of medication to help. I always ask for that. I've had 10 studies over a 17-year period and they always let me take a sleeping pill (most recently Zolpidem 5mg x 2).