How do I render objects in an order based on their y position for 2D?

So I'm trying to make a script that changes Order in Layer dynamically when objects are in range of each other. I've tried sortingOrder and it works for the 2 objects in my test scene. But when I try with many objects I see objects with a lower Y value render behind objects with a Higher Y value.

 public static Transform player;
 
     public float sightRange;
     int sort;
 
     SpriteRenderer sr;
 
     void Awake(){
         if (player == null){
             player = GameObject.FindGameObjectWithTag ("Player").transform;
         }
 
         sr = GetComponent<SpriteRenderer> ();
         psr = player.GetComponent<SpriteRenderer> ();
     }

     void Update () {
 
         if (Vector3.Distance (transform.position, player.position) < sightRange) {
 
             DecideSortingOrder ();
 
         } else {
 
             sr.sortingOrder = 0;
         }
     }
 
     void DecideSortingOrder(){
 
         if (player.transform.position.y > transform.position.y) {
             sort = 1;
         } else {
             sort = -1;
         }
             
         sr.sortingOrder = (int)Camera.main.WorldToScreenPoint (transform.position).y * sort;
 
     }
 }

I also tried initializing Order in Layer by taking the Y value of an object

 sr.sortingOrder = (int) transform.position.y;

But then I realized it doesn't work because Order in Layer only takes integers while my Y values can take floats. Any Y I get will be round down. Objects at y = 1.1 and 1.2 will have the same Order in Layer of 1.