Hi Janet
Try a little natural jolt of tryptophan... a warm mug of hot vanilla before you go to bed. Nuke a cup of milk in the microwave, stir in a bit of vanilla extract and some honey, and see if this gets you through the night. Skim milk is fine, the tryptophan goes with the protein and is not lost with the fat.
Turkey, the American's Famous Thanksgiving Feast, is rich in tryptophan, which is why we all nod off over the football game after gorging ourselves on it. If you don't feel too silly trying it, you can make surprisingly nice turkey sandwiches using turkey baby food and whatever other spices you like [mayo, black pepper]. Think of it as meat paste, which is what it is, after all. Try half a jar or more, half an hour before bedtime, and if you chase it down with hot vanilla, you should sleep like a top.
[I tube fed a kitty for a number of weeks. She was failing to thrive on the commercial 'tube food', which was terribly protein deficient. So I started adding regular feedings of slurried baby food with vitamin supplements - ham, turkey, chicken, veal, lamb. When turkey was on the menu, she'd purr and purr, and fall asleep before I'd finished. This stuff really works. Story had happy ending, kitty got well.]
We also make less melatonin as we age. This is one reason the elderly sleep so poorly at night [and then drowse during the day]... tryptophan is the biochemical precursor to both serotonin, the brain's natural antidepressant, and melatonin, our natural sleeping aid.
Other possibilities include chamomile tea - it must be strong, but if it's strong enough it will knock you right out. And green tea taken during the day as well as at night; it's a good source of theanine, a natural relaxant.
If you are sensitive to caffeine, avoid cocoa and black tea as well, because they contain theobromine, a chemical closely related to caffeine and also a stimulant.
Also, watch your evening vegetables! Believe it or not if you eat raw cabbage or bok choy, the glutamine they contain may keep you awake. [So obviously also stay away from Chinese take-out if they put MSG in it. Same effect.] And stay away from Marmite before bedtime, that stuff is LOADED with glutamate.
Oh yeah... also avoid white wine after dinnertime. Red may help you sleep, white is stimulating.
Hope this helps.