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The diagnosis lands like a wall. But the first month has a shape, and knowing it saves you a year of finding out the hard way. Nothing here takes more than an afternoon; nothing here has to happen today.

First: three true things

• This is not an emergency. Dementia moves in years, not days. You have time to learn, plan, and breathe. Today's only job is to not panic.
• They're still them. The diagnosis changed what you know, not who they are. The person who made you laugh yesterday still will tomorrow.
• You will not do this alone, not because you're lucky, but because you're going to build the help on purpose, starting this month.

Week one: steady the ship

• Tell one person everything. Not the whole family yet: one person you trust, the whole truth. Carrying it alone for even a week corrodes.
• Ask the doctor three questions (call back if you froze in the room): What type of dementia, and how sure are we? Was anything reversible ruled out: thyroid, B12, depression, medications? What should we do differently in the next six months?
• Learn the one rule that prevents half of all bad days: never argue with the disease. Feelings over facts, always. (Chapter 2: twenty minutes, the highest-value read on this site.)

Weeks two and three: the paperwork window

• Book an elder-law attorney now. This is the step everyone delays and everyone regrets delaying: powers of attorney, healthcare proxy, and an advance directive require the person to still have legal capacity, and the earlier they're done, the more it's their voice in the documents. Chapter 8 is the map.
• Have the wishes conversation while it's easy. Over coffee, not in a crisis: "If things ever got hard, what would matter most to you?" Write down the answers word for word.
• Start the one folder: diagnoses, medication list, insurance cards, doctors' numbers, the legal documents as they arrive. Label it. Tell two people where it is.

Week four: build the floor you'll stand on

• Tell the family, with the showtiming warning. Distant relatives will see a rally performance and doubt you. Send them the note written for exactly that.
• Claim one standing helper: one person, one specific slot: "Thursday afternoons." Specific requests get yeses; "let me know if you need anything" gets nothing.
• Do the ten-minute safety pass: rugs up, nightlights in, water heater down. The full walk-through can wait; those three can't.
• Save two numbers in your phone tonight: the Alzheimer's Association 24/7 Helpline 1-800-272-3900 (free, always answered) and the Eldercare Locator 1-800-677-1116 (local programs). You may not need them this month. You'll be glad they're there at some future 2am.