Visual Studio Code – Problem with calling a function only one time in unity

i’m fairly new to programming, and i have a problem with this code for my unity game, basically what happen is that the first time i try to call SelectGravity() it do it 2 or 3 times, after that it seems to work correctly, i can’t figure out why.

IsRotating = false is called in another script and i’m using visual studio 2019 for coding, if this can help.

void Update()
    {
        Rotation = Input.GetAxisRaw("RotatoWorld");

        if (Rotation != 0 && !IsRotating)
        {
            IsRotating = true;

            SelectGravity();
        }

        Physics2D.gravity = new Vector2(XGravity, YGravity);
    }

For those who asked this is the script in which i set IsRotating false

public IEnumerator Rotate90()
    {
        if(changeGravity.Rotation > 0.1)
        {
            Direction = 90;
        }
        else if(changeGravity.Rotation < -0.1)
        {
            Direction = -90;
        }

        float timeElapsed = 0;
        Quaternion startRotation = transform.rotation;
        Quaternion targetRotation = transform.rotation * Quaternion.Euler(0, 0, Direction);

        while (timeElapsed < lerpDuration)
        {
            transform.rotation = Quaternion.Slerp(startRotation, targetRotation, timeElapsed / lerpDuration);
            timeElapsed += Time.deltaTime;
            yield return null;
        }

        transform.rotation = targetRotation;

        StartCoroutine(CameraShake());

        changeGravity.IsRotating = false;
    } 

and i’ve declared it like this

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

public class ChangeGravity : MonoBehaviour
{
    CameraRotation cameraRotation;
    PlayerController playerController;

    private float XGravity;
    private float YGravity;
    public float Side;

    public float Rotation;
    public bool IsRotating;

    // Start is called before the first frame update
    void Start()
    {
        cameraRotation = GameObject.FindGameObjectWithTag("MainCamera").GetComponent<CameraRotation>();
        playerController = GameObject.FindGameObjectWithTag("Player").GetComponent<PlayerController>();

        Side = 0;

        YGravity = -9.81f;
        XGravity = 0f;

        IsRotating = false;
    }

Other than this i don’t call this function or modify this variable anywhere.