Wave script not working...

Hello so I just tried to make a wave scrip but I cant figure out why it is not working. I made a class called Wave to hold floats and ints of how many enemies to spawn and how often. The problem is that I want it to change after I kill all of the enemies. The problem is that instantly when I start the game it goes through all of my waves and reaches the end. I honestly dont know what is happening.

Spawn Script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemySpawnManager : MonoBehaviour {

    public EnemyController Enemy;

    public Transform Spawn1;
    public Transform Spawn2;

    //Setting Wave System
    Wave currentWave;
    int currentWaveCount;
    int RemainingEnemiesToSpawn;
    public Wave[] Waves;
        

    [System.Serializable]
    public class Wave
    {
        public int enemyCount;

        public float timeBetweenSpawn;
        public float SpawnCounter;
    }

    void NextWave()
    {
        if(currentWaveCount -1 <= Waves.Length)
        {
            currentWaveCount++;
            currentWave = Waves[currentWaveCount - 1];

            RemainingEnemiesToSpawn = currentWave.enemyCount;
        }
    }

	// Use this for initialization
	void Start () {
        NextWave();
        currentWave.SpawnCounter = currentWave.timeBetweenSpawn;
        RemainingEnemiesToSpawn = currentWave.enemyCount;
	}
	
	// Update is called once per frame
	void Update () {
        currentWave.SpawnCounter -= Time.deltaTime;

        if (currentWave.SpawnCounter <= 0)
        {
            RemainingEnemiesToSpawn--;
            currentWave.SpawnCounter = currentWave.timeBetweenSpawn;

            EnemyController newEnemy1 = Instantiate(Enemy, Spawn1.position, Spawn1.rotation) as EnemyController;
        }

        if(RemainingEnemiesToSpawn > 0)
        {
            NextWave();
        }
	}
}

Thank you for taking the time in helping me.

really ?

    if(RemainingEnemiesToSpawn <= 0)
         {
             NextWave();
         }

really ?