Have purified (filtered) water with you at all times and keep a glass or aluminum bottle beside the bed so you can drink during the night.
On waking drink a large glass of purified water.
Before every meal drink a large glass of water.
Put kettle on and have black tea (or mint from the garden), no sugar, no milk, weak, to go with breakfast.
Keeps your kidneys toned and all that water guards against constipation. Which can happen when you ditch the grains and sugar, until your body metabolises. Any questions?