How to get a for loop to run once per coroutine?

I am trying to make an AI (my first one without tutorials) and I am having a bug that completely ruins the AI. I have an array that I want to cycle through but instead of it adding one then going to the next point it goes straight from 0 for a while to 1,2,3 really fast, confusing the AI. Here is the script:

 // Start is called before the first frame update
 void Start()
 {
     noise = transform.GetChild(0).gameObject;
     noiseAnim = GetComponent<Animator>();
     chosenNo = 0;
     chosen = patrol[chosenNo];
 }

 // Update is called once per frame
 void Update()
 {
     StartCoroutine(Move());
     Debug.Log(chosenNo.ToString());
 }
 IEnumerator Move()
 {
     if (noise.GetComponent<Soundwave>().sense == true)
     {
         lastKnownPoint = noise.GetComponent<Soundwave>().point;
         transform.position = Vector2.MoveTowards(transform.position, lastKnownPoint.position, speed * Time.deltaTime);
         yield return null;
     } else if (noise.GetComponent<Soundwave>().sense == false)
     {
         if (transform.position == chosen.position)
         {
             for (; chosenNo < patrol.Length; chosenNo++)
             {
                 noiseAnim.SetTrigger("Screech");
                 yield return new WaitForSeconds(waitTime);
                 chosen = patrol[chosenNo];
             }
             if (chosenNo >= patrol.Length || chosen == null)
             {
                 chosenNo = 0;
             }
         }
        if (transform.position != chosen.position)
        {
            transform.position = Vector2.MoveTowards(transform.position, chosen.position, speed * Time.deltaTime);
        } 
     }
 }
 private void OnTriggerEnter2D(Collider2D collision)
 {
     if (collision.tag == "Player")
     {
         noise.GetComponent<Soundwave>().sense = true;
         noise.GetComponent<Soundwave>().player = collision.gameObject;
     }
 }
 private void OnTriggerExit2D(Collider2D collision)
 {
     StartCoroutine(Move());
 }

Any help would be great thanks :)