Delay in a IEnumerator

Hey guys^^

I'm trying to make a delay in a IEnumerator function. The script makes an animation with my player and than Shot(); a bullet.

My IEnumerator function for the animation is working right. But the problem now is that I'm trying to shoot multiple bullets with one attack. This also works, but all bullets appears at the same time. So I want to make a small delay between each bullet. Hope you can follow me^^

This is my script:

     IEnumerator WaitForAnimation ()
     {
         float animationTimer = 0;
                 
         currentStateTime = currentState.length;
         do
         {
 
             AttackMoving();
             animationTimer = animationTimer + Time.deltaTime;
             yield return null;
             
         }while ((animationTimer < currentStateTime || transform.position != attackEndPos) && (hits.isHitting == false));
 
         //Until here all works right, but this is the problem:
 
 //!!!!!!This is my problem, the delay!!!!!!!!!
         for (float t = bulletDelay; t >= 0; t = t - Time.deltaTime) {
 
             //Do Shot(); multiple times, this work right
                         for (int i = 0; i < bulletCount; i++) {
                                 Shot ();
                                 t = bulletDelay;
                         }
                 }
 
     }

At the moment the my delay with t kills unity xD

I realy thank you for your time^^