For my sleep study, I brought my telephone, pj's, medications, a light snack and a book which I didn't have time to read.
I would talk to the doctor, nurse, or the person with the sleep study, for their recommendations, on whether you should have a sleep aid or not. Also, to go over medications with them. I would recommend the phone, medications and a light snack. The book and snack are optional. Check on them if you are wanting.
Janet