Hey bpcyclist I hope you don't mind me chiming in with some research that I came across online (take with a grain of salt) about thorazine:

Side Effects of Thorazine (Chlorpromazine), Warnings, Uses

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 4/23/2019
Thorazine (chlorpromazine) is a phenothiazine anti-psychotic medication used to treat psychotic disorders such as schizophrenia or manic-depression, and severe behavioral problems in children. Thorazine is also used to treat nausea and vomiting, anxiety before surgery, chronic hiccups, acute intermittent porphyria, and symptoms of tetanus. The brand name Thorazine is discontinued in the U.S. Generic forms may be available. Common side effects of Thorazine (chlorpromazine) include:


and

Common and Rare Side Effects for Thorazine Oral


Sorry that you have all these meds and they negatively effect your life and sleep. Have you considered having a sleep study done? Maybe you are a segmented sleeper and can't sleep naturally 7 to 8 hours.. Maybe your time in medical school (med students never sleep, as I recall) permanently messed up your circadian rhythm?

Segmented sleeping is actually how humans used to normally sleep. I sleep segmented until 3 to 4 a.m. every night, am wide awake until 5 am. then sleep soundly until 7-9 a.m. I had to get 2 sleep studies to confirm my segmented sleeping pattern. Been that way my entire life since I was a baby.