Cull shader

How can I make a shader that doesn't render itself if the distance from the camera is greater than something, here is what I have in the subshader for now:

 SubShader
 {
     Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
     Blend SrcAlpha OneMinusSrcAlpha
     AlphaTest Greater .01

     LOD 200
    
     CGPROGRAM
     #pragma surface surf Lambert vertex:vert
     #include "UnityCG.cginc"
            
     uniform sampler2D _MainTex;
     uniform float4 _Wind;
     uniform fixed4 _Color;
     uniform float _CullDistance;

     struct Input {
         float2 uv_MainTex;
     };

     void vert(inout appdata_full v)
     {
         v.vertex.z += (sin(_Wind.x )/5.0) * v.color.r;
         v.vertex.x += (sin(_Wind.y )/5.0) * v.color.r;
     }

    
     void surf (Input IN, inout SurfaceOutput o) {
         fixed4 difTex = tex2D(_MainTex, IN.uv_MainTex);

         o.Albedo = difTex.rgb * _Color.rgb;
         o.Alpha = difTex.a;
     }

        
   ENDCG
   
 }