Sensitivity Help? || Scope Zoom

Hey guys! Cody here. It seems I am having a few issues. I created a scope on a sniper to get the basics down and I am using the FOV cam. I was wondering if there was a way to modify the zoom so while im zoomed in the sensitivity goes down to about 2 or 3. Heres my script. Feel free to modify or make any changes. Thanks to anyone who helps!

 using UnityEngine;
 using System.Collections;
 
 /// MouseLook rotates the transform based on the mouse delta.
 /// Minimum and Maximum values can be used to constrain the possible rotation
 
 /// To make an FPS style character:
 /// - Create a capsule.
 /// - Add the MouseLook script to the capsule.
 ///   -> Set the mouse look to use LookX. (You want to only turn character but not tilt it)
 /// - Add FPSInputController script to the capsule
 ///   -> A CharacterMotor and a CharacterController component will be automatically added.
 
 /// - Create a camera. Make the camera a child of the capsule. Reset it's transform.
 /// - Add a MouseLook script to the camera.
 ///   -> Set the mouse look to use LookY. (You want the camera to tilt up and down like a head. The character already turns.)
 
 [AddComponentMenu("Camera-Control/Mouse Look")]
 
 public class mouseLookAndHide : MonoBehaviour {
 
     public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 }
     public RotationAxes axes = RotationAxes.MouseXAndY;
     public float sensitivityX = 15F;
     public float sensitivityY = 15F;
 
     public float minimumX = -360F;
     public float maximumX = 360F;
 
     public float minimumY = -60F;
     public float maximumY = 60F;
 
     float rotationY = 0F;
     public bool showingMouse;
 
     void Update ()
     {
         
         //if you press "r" and the mouse is not shown then the mouse is shown and movable then execute code
         if(Input.GetKeyDown(KeyCode.M) && showingMouse == false){
             showingMouse = true;
             Screen.showCursor =true;
             Screen.lockCursor = false;
         }
 //if you press "r" and the mouse is shown then make it not shown
         else if(Input.GetKeyDown(KeyCode.M) && showingMouse == true){
         showingMouse = false;
         Screen.showCursor =false;
         Screen.lockCursor = true;
         }
         
         
         if (axes == RotationAxes.MouseXAndY)
         {
             float rotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX;
             
             rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
             rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
             
             transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0);
         }
         else if (axes == RotationAxes.MouseX)
         {
             transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityX, 0);
         }
         else
         {
             rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
             rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
             
             transform.localEulerAngles = new Vector3(-rotationY, transform.localEulerAngles.y, 0);
         }
     }
     
     void Start ()
     {        
         showingMouse = false;
         Screen.showCursor = false;
         Screen.lockCursor = true;
         
         // Locks in center of screen, Hides cursor
     //Screen.lockCursor = true;    
     //Screen.showCursor = false;
 
         // Make the rigid body not change rotation
         if (rigidbody)
             rigidbody.freezeRotation = true;
     }
 }

Also I know the code is the original I just implemented some of my own things. Thanks!