How to put opacity in mobile/diffuse

I have find a bit ugly (in hard code meaning) solution but in my case it was fastest solution.

 public float fadeoutSpeed = 0.1F;
  
 bool fadeOutDone = false;
         
 Shader transparentShader, diffuseShader;
     
 void Start()
 {
     fadeOutDone = false;
     transparentShader = Shader.Find("Legacy Shaders/Transparent/Diffuse");
     diffuseShader     = Shader.Find("Mobile/Diffuse");
 
     StartCoroutine(FadeOut());
 }
         
 IEnumerator FadeOut()
 {
     float a = 0F;
 
     var allChildren = GetComponentsInChildren<Transform>();
 
     List<SkinnedMeshRenderer> mRenderList = new List<SkinnedMeshRenderer>();
 
     int mLen = allChildren.Length;
 
     for (int mr = 0; mr < mLen; ++mr)
     {
         if (allChildren[mr].gameObject.GetComponent<SkinnedMeshRenderer>())
         {
             var m = allChildren[mr].gameObject.GetComponent<SkinnedMeshRenderer>();
             m.material.shader = transparentShader;
             m.material.color = new Color(1, 1, 1, 0);
             mRenderList.Add(m);
         }
     }
         
     while (!fadeOutDone)
     {
         if (a < 1.0F)
         {
             foreach (var child in mRenderList)
             {
                 child.material.color = new Color(1, 1, 1, a);
             }
         }
         else
         {
             fadeOutDone = true;
 
             for (int mr = 0; mr < mLen; ++mr)
             {
                 if (allChildren[mr].gameObject.GetComponent<SkinnedMeshRenderer>())
                 {
                     var m = allChildren[mr].gameObject.GetComponent<SkinnedMeshRenderer>();
                     m.material.shader = diffuseShader;
                     mRenderList.Add(m);
                 }
             }
         }
 
         a += Time.deltaTime * fadeoutSpeed;
         yield return new WaitForSeconds(fadeoutDelay);
     }
     
     yield return null;
 }