Automation turn on and off for specific time help

Configuration
1

Hi all,
I am trying to implement the following automation but something isn’t working as I need.

I need the switch.bath_radiator when I manually turn it on to stay on for 3 minutes and the turn off.
After that I need for the next 2 hours to turn on for 1 minute and turn off for 15 minutes in a loop. When the 2 hours passed I need to turn off.

I am trying to make it work, with the automation editor and chatgpt help but I can’t.
This is what I have right now. The first part is working ok but not the second part

- id: Radiator first cycle
  alias: Radiator first cycle
  triggers:
  - trigger: state
    entity_id:
    - switch.bath_radiator
    to: 'on'
    for:
      hours: 0
      minutes: 3
      seconds: 0
  conditions:
  - condition: state
    entity_id: input_boolean.bath_radiator_loop_started
    state: 'off'
  actions:
  - action: switch.turn_off
    metadata: {}
    data: {}
    target:
      entity_id: switch.bath_radiator
  - action: input_boolean.turn_on
    metadata: {}
    data: {}
    target:
      entity_id: input_boolean.bath_radiator_loop_started
  mode: single
  
  
- id: Radiator loop cycle
  alias: Radiator loop cycle
  description: ''
  triggers:
  - trigger: state
    entity_id:
    - input_boolean.bath_radiator_loop_started
    to: 'on'
  conditions: []
  actions:
  - repeat:
      until:
      - condition: template
        value_template: >
          {{ (as_timestamp(now()) - as_timestamp(states.input_boolean.bath_radiator_loop_started.last_changed)) >= 7200 }}
      sequence:
      - action: switch.turn_on
        metadata: {}
        data: {}
        target:
          entity_id: switch.bath_radiator
      - delay:
          hours: 0
          minutes: 1
          seconds: 0
      - action: switch.turn_off
        metadata: {}
        data: {}
        target:
          entity_id: switch.bath_radiator
      - delay:
          hours: 0
          minutes: 15
          seconds: 0
  - action: switch.turn_off
    metadata: {}
    data: {}
    target:
      entity_id: switch.bath_radiator
  - action: input_boolean.turn_off
    metadata: {}
    data: {}
    target:
      entity_id: input_boolean.bath_radiator_loop_started
  mode: single

Can someone help?