Setting a limit to how many random objects can spawn together?

First off, I just want to say I'm a beginner at this stuff so my code may not be very pretty (help if you can lol). I currently have my 5 obstacles spawning randomly in my game (think of subway surfer obstacles) and I'd like to make it so all of the obstacles cannot spawn one after another or have all 5 of them spawn right next to each other, trapping the player. At most I'd only want 3 to be able to spawn next to each other so that the other 2 obstacles can leave room for the player to avoid them. Any help is appreciated cause like I said I'm very new at this stuff and I've googled a lot and can't seem to find a direct answer.

Code (Don't laugh):

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Spawner : MonoBehaviour {
 
     bool Spawning = false;
     public float minTime = 0.5f;
     public float maxTime = 3.0f;
     public Vector3 spawnPoint1;
     public Vector3 spawnPoint2;
     public Vector3 spawnPoint3;
     public Vector3 spawnPoint4;
     public Vector3 spawnPoint5;
     public GameObject[] obstacles;
 
     IEnumerator SpawnObject1(int index, float seconds)
     {
         float spawnDelay = Random.Range(0f, 1f);
         while (true)
         { 
             yield return new WaitForSeconds(Random.Range(minTime, maxTime));
             Vector3 spawnPosition1 = new Vector3(spawnPoint1.x, spawnPoint1.y, spawnPoint1.z);
             Quaternion spawnRotation1 = new Quaternion();
             Instantiate(obstacles[index], spawnPosition1, spawnRotation1);
 
             yield return new WaitForSeconds(spawnDelay); 
         }
     }
 
     IEnumerator SpawnObject2(int index, float seconds)
     {
         float spawnDelay = Random.Range(0f, 1f);
         while (true)
         {
             yield return new WaitForSeconds(Random.Range(minTime, maxTime));
             Vector3 spawnPosition2 = new Vector3(spawnPoint2.x, spawnPoint2.y, spawnPoint2.z);
             Quaternion spawnRotation2 = new Quaternion();
             Instantiate(obstacles[index], spawnPosition2, spawnRotation2);
 
             yield return new WaitForSeconds(spawnDelay);
         }
     }
 
     IEnumerator SpawnObject3(int index, float seconds)
     {
         float spawnDelay = Random.Range(0f, 1f);
         while (true)
         {
             yield return new WaitForSeconds(Random.Range(minTime, maxTime));
             Vector3 spawnPosition3 = new Vector3(spawnPoint3.x, spawnPoint3.y, spawnPoint3.z);
             Quaternion spawnRotation3 = new Quaternion();
             Instantiate(obstacles[index], spawnPosition3, spawnRotation3);
 
             yield return new WaitForSeconds(spawnDelay);
         }
     }
 
     IEnumerator SpawnObject4(int index, float seconds)
     {
         float spawnDelay = Random.Range(0f, 1f);
         while (true)
         {
             yield return new WaitForSeconds(Random.Range(minTime, maxTime));
             Vector3 spawnPosition4 = new Vector3(spawnPoint4.x, spawnPoint4.y, spawnPoint4.z);
             Quaternion spawnRotation4 = new Quaternion();
             Instantiate(obstacles[index], spawnPosition4, spawnRotation4);
 
             yield return new WaitForSeconds(spawnDelay);
         }
     }
 
     IEnumerator SpawnObject5(int index, float seconds)
     {
         float spawnDelay = Random.Range(0f, 1f);
         while (true)
         {
             yield return new WaitForSeconds(Random.Range(minTime, maxTime));
             Vector3 spawnPosition5 = new Vector3(spawnPoint5.x, spawnPoint5.y, spawnPoint5.z);
             Quaternion spawnRotation5 = new Quaternion();
             Instantiate(obstacles[index], spawnPosition5, spawnRotation5);
 
             yield return new WaitForSeconds(spawnDelay);
         }
     }
 
     void Update()
     {
 
         if (!Spawning)
         {
             Spawning = true; 
             int enemyIndex = Random.Range(0, obstacles.Length);
             StartCoroutine(SpawnObject1(enemyIndex, Random.Range(minTime, maxTime)));
             StartCoroutine(SpawnObject2(enemyIndex, Random.Range(minTime, maxTime)));
             StartCoroutine(SpawnObject3(enemyIndex, Random.Range(minTime, maxTime)));
             StartCoroutine(SpawnObject4(enemyIndex, Random.Range(minTime, maxTime)));
             StartCoroutine(SpawnObject5(enemyIndex, Random.Range(minTime, maxTime)));
         }
     }
 }