Function to wait till collectible is ready to use?

[Necrotic]

I am trying to make an auto helm show and hide based on combat.
When I enter or exit combat, if I'm still using a skill or attack, I get an message saying "This collectible is not ready"

UseCollectible(#) works instantly.

I wonder if there is a function that can be called that would queue up or something so when it does become available, the collectible is then used.