How to hide/show serialized class object in the inspector with boolean value change?

I don't know if I worded it correctly but I hope you get it. I have a Dialogue class that among other things contains boolean value 'isOptionDialogue' and array of serialized DialogOption class objects that contain int and string value. Code looks like so:

 public class Dialogue : MonoBehaviour 
 {
     //some other stuff
 
     public bool isOptionDialogue;
     public DialogOption[] dialogOptions;
 }
 
 [Serializable]
 public class DialogOption
 {
     public int targetIndex;
     public string optionSentence;
 }

and it shows in the inspectior like so:

But I want to make it so it only shows Dialog Options when bool IsOptionDialogue is set to true.

Is false:

Is true:

I am really bad with UnityEditor stuff. I followed some sample code I found and tried doing something by overriding OnInspectorGUI() and drawing things with EditorGUILayout but I only got it to work with simple variables. I have no idea how to draw an array of serialized class objects. Please help