Decrease the temperature.
As you sleep, your body temperature changes. When you lie down, your body cools down. If your room is too hot, you might have trouble falling asleep. Set your thermostat between 60 and 67 F (15.6 and 19.4°C). Bathing or showering in hot water can help the body change its temperature faster. The brain’s cooling down afterward may signal it to sleep.
According to a literature review, you are taking a hot bath or shower before bed can increase sleep efficiency and quality.