While loop crashes unity

Whenever my change direction function is called unity crashes. I'm pretty sure it has to do with the while loop but I don't know why. I'm trying to make the enemy follows the player, but right now whenever the player changes direction the enemy changes direction instantly. I want to make it so that the enemy gradually changes direction.

 public class EnemyAI : MonoBehaviour
 {
     private Animator anim;
     private LimbController limbs;
     private GameObject player;
 
     public float speed;
 
     private int playerDir;
     private int lastPlayerDir;
     private float dir;
 
 
     private void Awake()
     {
         limbs = GetComponent<LimbController>();
         player = GameObject.FindGameObjectWithTag("Player");
         anim = GetComponent<Animator>();
     }
 
 
     private void Start()
     {
         playerDir = player.transform.position.x > transform.position.x ? 1 : -1;
         lastPlayerDir = playerDir;
         dir = playerDir;
     }
 
 
     private void Update()
     {
         playerDir = player.transform.position.x > transform.position.x ? 1 : -1;
         if(lastPlayerDir != playerDir)
         {
             ChangeDirection(playerDir);
         }
 
         if(player.transform.position.x - transform.position.x > 5 || player.transform.position.x - transform.position.x < -5)
         {
             limbs.body.bone.velocity = new Vector2(dir * speed, limbs.body.bone.velocity.y);
             anim.SetBool("isWalking", true);
         }
         else
             anim.SetBool("isWalking", false);
     }
 
 
     private void ChangeDirection(int changeDir)
     {
         while(dir != playerDir)
         {
             dir += changeDir * Time.deltaTime;
         }
         lastPlayerDir = playerDir;
     }
 }