In older people, particularly, this drop in body temperature might have become attenuated, so that the trigger is not activated. To activate the trigger, researchers recommend raising body temperature with a hot bath and then letting body temperature fall naturally afterwards. Try taking a hot soak before bedtime and then, put on your PJ's and robe and let your body cool off naturally. Sub lingual melatonin taken an hour before bedtime. To save some money, find whole kava powder in bulk via 'back of health magazine' small ad, for mail order.
Some powders are weaker than others but kava capsules are standardized.
If there is a habit of mental stress, do mantra of any sort. Your auntie's phone number. God and I are one. Oriental Sanskrit syllables. Chocolate has theobromine, so should only be eaten in first few hours of the day.