Ipseity-Demo/Assets/_Content/Scripts/Features/LiminalSpaces/Samyaza/InitShader.cs

using UnityEngine;

public class InitShader : MonoBehaviour
{
    void Start()
    {
        var renderers = GetComponentsInChildren<Renderer>();
        float startTime = Time.time;

        foreach (var renderer in renderers)
        {
            renderer.material.SetFloat("_FogStartTime", startTime);
        }
    }
}