How to restrict coroutine?

Question

C++ / C#

In my game, I use coroutine to spawn coins and medkits (health recovery) with this code:

IEnumerator Coin()
    {
        while (!Player.lose)
        {
                float newPos = a[new System.Random().Next(0, a.Length)];
                Instantiate(coin, new Vector2(-11f, newPos), Quaternion.identity);
                yield return new WaitForSeconds(time);
        }
    }

But with this code, the coin and first aid kit spawn immediately when the game starts. How can I fix this? How can I make coroutine start working a few seconds after the start of the game?

Answer 1

add to the beginning of WaitForSeconds?
Or not launch it right away.