I think its too late. An entire generation had their brains fried. But yeah, better late than never.
Also the brain can actually recover. But it takes a lot of work.
For me, just reading a book is difficult now. The mind is not used to that kind of focus. My eyes go down the page, and then I realize ive been thinking of something else, and have to start over. This happens over and over again. But with practice, it gets easier.