Things that help me with it are physical activity on a regular basis during the day, good sleep habits
like a regular schedule of going to bed, white noise
like a fan, a cool and dark room, not eating or drinking too much before bed. Sleep aids are helpful short term for some but I've always tried to stay away from that. So, your doctor prescribed you something. Have you ever considered melatonin? That's something that lots of people can take successfully without side effects.