Two Recommendations for this. Look into the Retriggerable delay. each time you send information to it, it will reset its timer to whatever the float value you give it is and continue to delay.
The second is the set timer by event. for what your talking about your really wanting something that will perform an action often (update the visual timer) and then perform a specific action at the end of it. the set timer by event function would let you loop a particular action to occur say every .1 seconds, and then after so much time has built up, it will trigger something else and make itself stop looping.
Heres some documentation on the event timer: [https://docs.unrealengine.com/en-US/Gameplay/HowTo/UseTimers/Blueprints/index.html][1]
I’ll whip up a quick example bp setup here in a moment.
