Help with procedure trigger on player tick update

I'm making a Night Vision Goggles with a shader that can be turned off and on with a key, but when the key is pressed to turn the shaders on, it loads non-stop, causing a lot of lag.

 

So, what I want to know, its possible to decrease the amount of lag, basicly load the shader only if false, otherwise, don't, BUT, I still need the procedure to check evey tick for the variable.

Shader Procedure:

Shaders Utils version: 1.4.2