Fixing James Webb mirror

James Webb infrared telescope at the Lagrange point already has got the meteor hit. To fix it, we would need to send a repair mission to JWST, capable of spending almost more than a year in space. Crew must be able to sustain itself in the journey. Replace the mirror, and come back to earth safely.
Space craft maneuvering in space must not use thrusters to stop by if it damages the JWST shield.