Tapered from 1mg of clonazepam to 0.5 for the last 3 months. when i feel too anxious can i take 1mg just one time?will it hurt the tapering?

If your doctor is: tapering your dose, he or she should ALSO be telling you how to manage your anxiety without it, either through other medications (like buspirone or antidepressants) and/or through non-pharmacological management techniques like relaxation therapies, meditation, yoga and others. Please talk to your doctor and/or get a referral to a therapist. Taking it ONCE won't hurt taper, but more often will.