The only advice I can give without knowing the details is to follow good sleep hygiene principles.
See this fact sheet:
I've actually tried a lot of the advice on this sheet and found it helpful. Although it doesn't fix a sleep disorder, it helps.
Occupational therapy has helped me in a lot of ways :)
If general sleep hygiene doesn't do the trick, maybe seeing an occupational therapist would help.
Conditions: Celiac disease, Fibromyalgia, Chronic Fatigue Syndrome, neuropathic pain, FODMAP intolerances, allergies, anxiety, depression, acid reflux, dermatitis, tinnitus, and more.
Being tested for: Lyme, Lymphoma, Bartonella, thyroid disorders.
Goals: to be an occupational therapist; to explore and change the world. "Reach for the moon; even if you miss, you will land among the stars."