,Code in loop simultaneously executing on members of array rather than iterating one at a time

I'm making a little boxing game. I designed a function to accept a whole slew of arguments and then cause the enemy boxer to make attacks based on the data fed into the function. I have another class which sets a bunch of variables and then I read those values, assign them to local variables, and then run my function. Thing is that the code in my loop is executing on all members of the array instead of iterating over them one at a time, resulting in the enemy throwing many attacks at once that were intended to be thrown in sequence.

I'm going nuts, tried all the different types of iterators and got nowhere. I'm new to C#, no idea what I've done wrong here. The function that sets the variables in the other script is at the bottom of the code block.

 using UnityEngine;
 using System.Text.RegularExpressions;
 
 public class overdrivePiano : MonoBehaviour
 {
     private GameObject enemyBoxer;
     private pianoRoll theRoll;
     private string theCoordMod;
     private string[] thePatterns;
     private int howMany;
     private float thePunchDelay, thePatternDelay, theCoordModAmount, punchDelayTimer, patternDelayTimer;
     private Vector2[] theCoords;
 
     void Start()
     {
         enemyBoxer= GameObject.Find("enemyBoxer");
         theRoll = gameObject.GetComponent<pianoRoll>();
         punchDelayTimer = 0;
     }
 
     private void readRoll()
     {
         thePatterns = theRoll.patterns;
         thePunchDelay = theRoll.punchDelay;
         thePatternDelay = theRoll.patternDelay;
         theCoords = theRoll.coords;
         theCoordMod = theRoll.coordMod;
         theCoordModAmount = theRoll.modAmount;
     }
 
     public void onSwitch()
     {
         theRoll.SendMessage("firstVerse");
         readRoll();
         attackOverdrive(thePatterns, thePunchDelay, thePatternDelay, theCoords);
     }
 
     public void attackOverdrive(string[] patterns, float punchDelay, float patternDelay, Vector2[] coords, string coordMod = "none", float modAmount = 0)
     {
         for(int i = 0; i < patterns.Length; i++)
         {
             if (patterns[i] == "triangle")
             {
                 int j = 0;
                 Vector2[] triangleVectors = new Vector2[] {new Vector2(coords[i].x, coords[i].y + 0.75f), new Vector2(coords[i].x - 0.75f, coords[i].y - 0.75f), new Vector2(coords[i].x + 0.75f, coords[i].y - 0.75f)};
                 do
                 {
                     if (punchDelayTimer <= punchDelay)
                     {
                         punchDelayTimer += Time.deltaTime;
                     }
                     else
                     {
                         enemyBoxer.SendMessage("createAttack", triangleVectors[j]);
                         punchDelayTimer = 0;
                         j += 1;
                     }
                 } while (j < 3);
             }
             else if (patterns[i] == "square")
             {
                 
             }
             else if (patterns[i] == "circle")
             {
                 
             }
             else if ("verticalLine".CompareTo(patterns[i]) == -1)
             {
                
                 var result = Regex.Match(patterns[i], @"\d+$", RegexOptions.RightToLeft);
                 if (result.Success) 
                 { 
                     //Debug.Log(result.Value);
                 } 
             }
         }
     }
 }


 private void firstVerse()
     {
         patterns = new string[] {"triangle", "triangle", "triangle", "singleRandom", "singleRandom", "verticalLine5"};
         coords = new Vector2[] {new Vector2(-1.3f, 2.5f), new Vector2(0f, -2.5f), new Vector2(1.3f, 2.5f), new Vector2(0,0), new Vector2(0,0), new Vector2(0, 4f)};
         punchDelay = 0.5f;
         patternDelay = 0.5f;
     }