This is the script that handles the player going to sleep. Alot of is dealing with the fade which I'll cover later.

Sleep_Clickable.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class Sleep_Clickable : ClickableParent
{
    //DaycountManager is the manager that handles specifically the days system
    public DayCountManager DayManager;
    public Text DayDisplay;
    public Text DifficultyDisplay;
    public Image FadeImage;
    public float MinimumDistance;
    public AudioClip Clip;
    private AudioSource Source;

    private float currentAlphaOfImage;
    void Start(){
        Source = GameObject.Find("Player").GetComponent<AudioSource>();

        FadeImage.color = new Color(FadeImage.color.r, FadeImage.color.g, FadeImage.color.b, 0);
        currentAlphaOfImage = 0;
        DayDisplay.enabled = false;
        DifficultyDisplay.enabled = false;
    }

    public override void OnClick(Vector3 ClickPosition){
    
    if(Vector3.Distance(ClickPosition, transform.position) <= MinimumDistance)
        Source.PlayOneShot(Clip);
        StartCoroutine(Fade());

    }


    IEnumerator Fade(){
       
            while(FadeImage.color.a < 1){
                currentAlphaOfImage += 0.1f;
                FadeImage.color = FadeImage.color = new Color(FadeImage.color.r, FadeImage.color.g, FadeImage.color.b, currentAlphaOfImage);
                yield return new WaitForSeconds(0.01f);
            }
            DayManager.NextDay();

            DayDisplay.text = "Day: " + DayManager.CurrentDay.ToString();
            DayDisplay.enabled = true;
            DifficultyDisplay.text = "Difficulty Level: " + PopManager.DifficultyLevel.ToString();
            DifficultyDisplay.enabled = true;
            
            yield return new WaitForSeconds(5.0f);
            
            DifficultyDisplay.enabled = false;
            DayDisplay.enabled = false;
            
            while(FadeImage.color.a > 0){
                currentAlphaOfImage -= 0.1f;
                FadeImage.color = FadeImage.color = new Color(FadeImage.color.r, FadeImage.color.g, FadeImage.color.b, currentAlphaOfImage);
                yield return new WaitForSeconds(0.01f);
            }

        currentAlphaOfImage = 0;
        FadeImage.color = FadeImage.color = new Color(FadeImage.color.r, FadeImage.color.g, FadeImage.color.b, currentAlphaOfImage);
        StopCoroutine(Fade());
    }
    
}