"buddies" multiplying, can't find what's wrong with my script

so I'm following this old tutorial: https://www.youtube.com/watch?v=77zdOaUGguc but my background just keeps multiplying all over the place, crashing Unity if I don't stop the game fast enough. I've looked through the comments and made the changes that people there suggested but it's an old video so i doubt I'll get any answers if i ask there.

My script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 [RequireComponent(typeof(SpriteRenderer))]
 
 public class Tiling : MonoBehaviour
 {
 
     public int offsetX = 2;
 
     public bool hasARightBuddy = false;
     public bool hasALeftBuddy = false;
 
     public bool reverseScale = false;
 
     private float spriteWidth = 0f;
     private Camera cam;
     private Transform myTransform;
 
     void Awake()
     {
 
         cam = Camera.main;
         myTransform = transform;
 
     }
     // Use this for initialization
     void Start()
     {
 
         SpriteRenderer sRenderer = GetComponent<SpriteRenderer>();
         spriteWidth = sRenderer.sprite.bounds.size.x;
 
     }
 
     // Update is called once per frame
     void Update()
     {
 
         if (hasALeftBuddy == false || hasARightBuddy == false)
         {
 
             float camHorizontalExtend = cam.orthographicSize * Screen.width / Screen.height;
 
             float edgeVisiblePositionRight = (myTransform.position.x + spriteWidth / 2) - camHorizontalExtend;
             float edgeVisiblePositionLeft = (myTransform.position.x - spriteWidth / 2) + camHorizontalExtend;
 
             if (cam.transform.position.x >= edgeVisiblePositionRight - offsetX && hasARightBuddy == false)
             {
 
                 MakeNewBuddy(1);
                 hasARightBuddy = true;
 
             }
             else if (cam.transform.position.x <= edgeVisiblePositionLeft + offsetX && hasALeftBuddy == false) ;
         }
 
         MakeNewBuddy(-1);
         hasALeftBuddy = true;
 
     }
 
     void MakeNewBuddy(int rightOrLeft)
     {
         Vector3 newPosition = new Vector3(myTransform.position.x + myTransform.localScale.x * spriteWidth * rightOrLeft, myTransform.position.y, myTransform.position.z);
         Transform newBuddy = Instantiate(myTransform, newPosition, myTransform.rotation) as Transform;
 
         if (reverseScale == true)
         {
 
             newBuddy.localScale = new Vector3(newBuddy.localScale.x * -1, newBuddy.localScale.y, newBuddy.localScale.z);
 
         }
 
         newBuddy.parent = myTransform;
         if (rightOrLeft > 0)
         {
 
             newBuddy.GetComponent<Tiling>().hasALeftBuddy = true;
 
         }
         else
         {
 
             newBuddy.GetComponent<Tiling>().hasARightBuddy = true;
 
         }
     }
 
 }