Camera bobbling effect not working in first person after attaching camera to head

[ArsaMate (Arsa)]

So I made this camera bobbling effect → https://gyazo.com/eea213683e9fe86fa595bc6ff0498268

the code is as follows

local runService = game:GetService("RunService")

local char = script.Parent

local humanoid = char:WaitForChild("Humanoid")

function updateBobbleEffect()
	local currentTime = tick()
	if humanoid.MoveDirection.Magnitude > 0 then
		local bobbleX = math.cos(currentTime * 7) * .47
		local bobbleY = math.abs(math.sin(currentTime * 7)) * .47
		local bobble = Vector3.new(bobbleX, bobbleY, 0)

		humanoid.CameraOffset = humanoid.CameraOffset:lerp(bobble, .50)
	else
		humanoid.CameraOffset = humanoid.CameraOffset * .50

	end
end
runService.RenderStepped:Connect(updateBobbleEffect)

Now after using the Realism open source module to make my body parts visible, my bobbling effect is gone, likely due to the camera attaching itself to the head (which I want for other anims)
final product : https://gyazo.com/950486fa61b4444dc933084175451369
I tried several methods but I can’t seem to retain the bobbling effect while the camera is attached to the head, any help or corrections?

[Zeustice]

CameraBobble.rbxl (54.1 KB)

Here is a place file with realism working alongside a more advanced camera bobbling effect that also lerps the camera so the movement feels more fluid.