Make arrows gradually fall using code

Question

I want to make the arrows in my top-down zelda-like game to gradually fall using code.
Just like the tears in The Binding of Isaac.

My code isn't working and I have no idea how to make it work properly.

Here is my code:

extends RigidBody2D

var max_range = 50

func _physics_process(delta):

    if max_range > 0:
        max_range -= 1

    if max_range < 35:
        self.rotation_degrees += 2


    if max_range == 0:
        queue_free()

Comments

If I had to guess, I'd say it's that there's too many physics process passes happening for you to notice the rotation of the arrow.

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Thank you for your comment!
The problem is the rotation change is just subtle changing, and it's very weird looking