Automation called until a sensor change its status

Configuration
1

Hi,
I have a power sensor

- platform: template
  sensors:
    potenza_trasmettitore:
      friendly_name: "Potenza Trasmettitore"
      unit_of_measurement: "W"
      value_template: >
        {{ bla bla bla bla }}

and this automation

mode: single
trigger:
  - platform: state
    entity_id:
      - sensor.trasmettitore_potenza
    to: "1500"
condition: []
action:
  << reduce power at 1000 W >>

Now, if the automation fails for any reason and my sensor remains at 1500 W, the automation must be called again, until the sensor will change its status.

But if the sensor remains at 1500, the automation will be not called again

Is there a method to fix this situation?

Maybe with the timestamp of the sensor?

2

My interpretation: you want to reduce power to 1000 when power 1500. You case is the even when the action is executed, the power can remain 1500 so you would need to call it again…and again …
Although I would question the effect of the action to reduce first, the solution might be to run a sort of while -clause, e.g. something alike
repeat until power < 1500
action
wait x minutes

examples here
Automation - Repeat until + condition AND - Configuration - Home Assistant Community (home-assistant.io)