How to stop script after all twitch drops are collected

[DenkingOfficial]

Is it possible to stop script after all possible drops are collected?
For example, watching Genshin Impact streams now can give you 5 different rewards:

1. After 15 mins of watching
2. After additional 30 mins
3. After additional 1 hour
4. After additional hour and a half
5. After additional 2 hours

How to make script stop after all drops are collected?
Any help would be greatly appreciated ❤

[ranga2009]

as an example, find the name of the last drop. and at the moment when he sends an event with this drop, stop the script. I think something like this can be implemented