Hey Honeygirl. So sorry you're going through this. My Dad has AD and is in his early 60s. I'm 30, so I feel your pain about going through this at a time when most other people our age deal with this with grandparents. I don't know about online support, but if you find a good community, post back here, because I'd love to know. I've taken my mom to a couple local support group meetings, but she waffles between a sort of denial (everything's fine now, I don't need to worry about it) and being very doom and gloom. My Dad is still very involved in doing things in the community now that he had to take early retirement from work. He actually is still driving, which hasn't been a problem yet, but it's kind of like a ticking time bomb because we all know that the time will come. He does really well and takes his GPS everywhere with him, but just with the nature of the disease, you never know when what was fine yesterday will suddenly be completely foreign to him.
I've got two little ones (4 year old and 18 month old - if I remember right, we have two that are the same age) so it's hard for me to be much help, though they don't need it right now, but it makes me sad to think of all the fun grandpa things he will miss out on. He LOVES being with the kids, but it's to the point now that I can't let Dad be here with both kids alone. he's fine with the 4 year old, but my little one has some dietary restrictions and is a busy (i.e. troublesome) one so she's just a little much and my Mom doesn't really enjoy kids in general, so Dad doesn't get to spend a lot of time with them since they never come over just to visit, only if I ask them to babysit.
I know we're at different points in this journey, but it's still nice to know there's someone who understands. My Dad asked me to be his "medical advisor" so I've gone to all his appointments with him and he expects me to make decisions for him, which puts me in a weird position, since Mom is his wife and obviously has the final say-so and we don't always see eye-to-eye. I can see bigger problems arising down the road because of that. I try to talk to her, but she's very indirect and doesn't like to address things the way they are, so she's VERY hard to read.
anyway, hoping someone has suggestions for some online support.