A tip that a sleep disorder specialist gave me years ago is to have a shower just before bed. Not too hot, and not too cold. It stabilises your body temperature

A tip that a sleep disorder specialist gave me years ago is to have a shower just before bed. Not too hot, and not too cold. It stabilises your body temperature apparently. Also, try sleeping with just a light linen or cotton sheet. Disclaimer: none of this is expert advice, it just works for me, and may be worth trying!