Double jump code allows player to triple jump when on ground

I am trying to have my script allow the player to double jump, whether he is on the ground or falling off a platform. In my current logic, if the player is on the ground, he is allowed to double jump. If the player is falling off a platform, he is able to double jump. I’m at a loss for what I’m doing wrong. Can anyone point me in the right direction?

private void FixedUpdate()
 {
	 //used to calculate sprite
	 IsGrounded = Physics2D.OverlapCircle(GroundCheck.position, GroundCheckRadius, GroundLayer);
 }
 
void Update()
{
 
	if (IsGrounded)
		NumJumpsRemaining = MaxNumJumps;
 
	if (Input.GetButtonDown("Jump"))
		Jump();
 
	/*Other Movement
	  Code Here*/
}
 
public void Jump()
{
 
	if (NumJumpsRemaining > 0)
	{
		myRigidBody.velocity = new Vector2(myRigidBody.velocity.x, JumpHeight);
		PlayJumpSound();
		NumJumpsRemaining--;
	}
}

Stab in the dark here, but I guess your IsGrounded has time to reset NumJumpsRemaining (line 11) before the player has left the ground.

Try moving that reset to the fixedupdate instead, just after line 4, which will decrease the chance of “grabbing the ground just after jumping”. You could also put a short timer on the reset NumJumpsRemaining, try forcing it to wait for atleast 0.1 second after jumping before being able to reset.

I’m sure there are many ways to remedy this, assuming that this is even the source of your problem.