help with movement along x axis and slow down. please help

Hello all,

I have this script attached to the camera in a 2D scene.

 #pragma strict
 private var screenPoint: Vector3;
 private var offset: Vector3;
 private var curScreenPoint : Vector3;
 private var curPosition : Vector3;
 var velocity : Vector3;
 var underInertia : boolean;
 var time : float = 0;
 var SmoothTime : float;
 var min : Vector3 = new Vector3(-9,0,0);
 var max : Vector3 = new Vector3(75,0,0);
 var within : boolean = false;
 var frameVelocity : float;
  
 function Start () {
 }
  
 function Update () {
  
     if (transform.position.x > min.x && transform.position.x < max.x){
         within = true;} else {within = false;}
         
     if(underInertia && time <= SmoothTime && within == true)
     {
         transform.position += velocity;
         velocity = Vector3.Lerp(velocity, Vector3.zero, time);
         time += Time.smoothDeltaTime;
     }
     else
     {
         underInertia = false;
         time = 0.0f;
     }
  
 if ( Input.GetMouseButtonDown(0)) {
     screenPoint = Camera.main.WorldToScreenPoint(gameObject.transform.position);
     offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, 0, 0));
     Screen.showCursor = false;
     underInertia = false;
     }
  
 if ( Input.GetMouseButton(0) ) { 
 var prevposition : Vector3 = curPosition;
     curScreenPoint = new Vector3(Input.mousePosition.x, 0, 0);
     curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
     velocity = curPosition - prevposition;
     transform.position = curPosition;
     }
  
 if ( Input.GetMouseButtonUp(0)) {
     underInertia = true;
     Screen.showCursor = true;
     }
 }

This script keeps the camera's x motion inert in the direction of the mouse x position based on the speed of the swipe (either left or right). I am trying to slow down the inertia over time and stop motion of the camera, and also keep the motion/ movement only between the min and max variables in the script at all times.

I managed to make the inertia stop when mousebuttonup at the min and max points, but if i click and drag the motion continues past those points.

I am trying everything to fix these two problems, but I am a total noob, can anyone help with this? Any help will be greatly appreciated