Unfortunately, I was never really able to be the caregiver for my mother. I live several miles away, and could only get home a few times a year. While home, though, my father would sleep the entire time, exhausted from having to serve as her caregiver. I would be exhausted after even three days home, let alone it being a full-time job.
It is important to make sure you have a strong support system as a caregiver. There are Alzheimer's support groups out there. My father did try to go to a couple of meetings. Alas, they often were not meeting when they posted they would be. When he called to inquire, he was told "We forgot." No joke. (But how flippin' cliche and hilarious at the same time!?!)
I actually came across a great article for caregivers the other day. It's from the Keene Sentinel in New Hampshire, but the information is useful for anyone who is dealing with Alzheimer's in the family. Read "Resources and tips for the millions of Alzheimer's caregivers, a group at-risk of emotional, health, work, and relationship issues."