cooldown and stopping skript when item is taken out of hand

[reallybadskripter]

• Trying to add a cooldown of 1500 ticks, or 1 minute and 15 seconds, but placing it anywhere it still has not worked at all. please help im very new
  
  
  on right click:
  player is holding a enchanted book named "Medical Syringe" with lore "Heal 2 hearts after 2 seconds":
  if player's health is 10:
  send "&cYou're already full health!"
  else:
  send " is administering a Medical Syringe"
  apply slowness to player for 60 ticks
  wait 60 ticks
  remove 1 of player's held item from player's inventory
  heal player by 3 hearts
  cooldown: 1500 ticks
  cooldown message: You must wait %remaining_time% more seconds!
  
  
  #/give @p enchanted_book{display:{Name:'[{"text":"Medical Syringe","italic":false}]',Lore:['[{"text":"Heal 2 hearts after 2 seconds","italic":false}]']},Enchantments:[]} 1#
  
  
  
  Need help with also clearing the action, if the book is taken out of hand

 

[MiiTsY]

Hey there, there is 2 cooldown posts that's been posted for help recently, please check them.

Also I don't understand

Need help with also clearing the action, if the book is taken out of hand