Struggling ..

My daughter is 18 months old and is refusing to sleep and will constantly wake up from night terrors we moved her nap time back a hr did more relaxing things before bed kept a strict routine..

nothing we worked we talked to her dr who said give her .5mg of melatonin Anf that does work but I don’t want to drug my kid every night or every other night..

i don’t know what to do anymore or how to get her to stay asleep and or go to sleep.