How to disable a shield

[TNTNerd23500]

I want to make it so when the player is holding out their shield after like 1 second the shield will go down like they are not holding it up and the shield to go on cooldown for like 1 second I tried making so the shield gets put on cooldown and that makes it so they cant lift it up to block with it but it does not put the shield down.
I have also tried this line up but I am not happy about the results: Player Right Click > If Holding Shield > Set Variable "slot" to Held Slot > Wait 1 second > If No Item Cooldown on the Shield >{ Set Slot "slot" to air > Set Shield Cooldown to 20 Ticks > Wait 1 Tick > Set Slot "slot" to Shield }