What can i do about my fragile teeth? i fear grinding will cause more to chip.

Night guard.: Night guards fabricated and adjusted by your dentist to fit your mouth exactly area your best option. Soft night guards don't tend to protect your teeth as well.

Mouthguard, restore: See a dentist for a thorough exam to determine the cause of your fragile teeth. The dentist can treat this problem with crowns or other dental restorations. The dentist can also fabricate a mouth guard (aka occlusal splint, night guard) to protect your teeth from grinding or bruxism.