Quitting laptops and using a proper desktop, or a laptop stand plus an external keyboard, was like toggling off the bruxism switch. It went off in a week. Plus, I stopped suffering from horrible migraines.

In order to repair your enamel a bit and keep what you have you may want to try toothpastes and creams that contain enamel-like ceramics. I've had spectacular results with a combination of calcium salts, fluoride and hydroxyapatite and ceramics (Novamin). There are better things to add up into the mix right now, such as self-assembling peptide scaffolds.