Thank you so much @libjen. I really appreciate the advice and the encouraging words. I hope I didn't make my life sound too "amazing"...just trying to explain that I really don't see stress or anxiety as the root cause of these nightly episodes. I will definitely talk to my endocrinologist (who seems to completely puzzled by my symptoms) about the possibility of a thyroid issue. In the meantime, thank you again for all your advice. Wishing you all the best!