I'm sorry about what you are currently experiencing. I've heard a lot of different stories about stroke patients, and a lot of them are not good. Brain degeneration has always been scary for me. Some say new pathways [neuroplasticity] can be made eventually, so I hope it gets better for you.
The majority of healing is done in the first 6 to 12 months. After that, not much will change for most people. It has been over two years for me and the only thing that is changing is me discovering new ways I am unable to think :D