If you want one switch to enable or disable a vacation-lighting routine without editing all the time blocks, use a helper as a condition rather than creating a second competing schedule.
Keep the trigger and the permission separate
Home Assistant’s Input Boolean helper stores an on or off state. Give it a name that makes its meaning explicit, such as Vacation Lighting Enabled. Leave the existing time trigger in place and make the helper’s on state a condition for the relevant action. Changing the helper is not the same thing as directly changing the lamp.
Test both branches safely
Use a nonessential lamp and a short test window. Confirm the automation does nothing with the helper off and performs the intended action when on. Test direct control separately. If disabling the helper is also supposed to turn off a lamp that is already lit, define that behavior explicitly instead of assuming a condition reverses an earlier action.
See the manufacturer’s guidance for current requirements. Related: home assistant schedule helper on window vs device action.
