Dynamically spawn timers

Configuration
,
1

Hello, I have an automation to notify me when my windows are open for too long.
It works pretty good but I’d like to do some improvements.
My automation so far:

alias: Close window notification (automatic)
description: ""
triggers:
  - entity_id:
      - binary_sensor.window_office_garden_left_contact
      - binary_sensor.window_office_garden_right_contact
      - binary_sensor.window_office_street_contact
      - binary_sensor.window_bathroom_upstairs_contact
    from: "off"
    to: "on"
    for: 0:{{ states('input_select.duration')|int }}:00
    trigger: state
conditions: []
actions:
  - data:
      message: Fenster {{ trigger.from_state.name }} schliessen
      title: Fenster schliessen
    action: notify.notify
mode: single

I want to archieve failsafeness and I think I can get that with Timers.

But how can I dynamically spawn a Timer for each of the triggers? If I have to define a Timer manually then the automation would be quite complex I think because I need to check which entity triggers which Timer. Or I need to do an automation each window which is also not what I want. Is it possible to create timers during automation and destroy them when they served their purpose?

Thanks for you help