The rule is one line: water before coffee. Nothing else changes.
You wake up after hours without fluids. A glass first thing is an easy way to start the day with some.
Keep a glass by the kettle or the machine. Fill it the night before if mornings are rushed.
Drink it while the coffee brews. The waiting time is already there, so the habit costs you no extra minutes.
Coffee still happens. This is not a swap or a sacrifice. It is one glass, then the usual cup.
Most days that is the whole practice. Water, then coffee, in that order, before anything else gets going.