He has always drank water from the sink. In the last year he just gets done and gets right back up for a drink again. He never used to do this.
Hmmmmmm, you might want to consider a diabetes check?
Especially in an older cat, this could be a sign of diabetes.
My cousin gave insulin shots to her cat, who also went blind due to the diabetes. She just couldn't bear losing the cat, and when she finally died, my cousin was absolutely devastated. Then again, she grew up with that cat: She was 6 when she got the cat as a kitten, and the cat was 17 when she died. I think that she actually saw the cat as a sibling, since she was an only child.
Mark