diff --git a/packages/scheduling.yaml b/packages/scheduling.yaml
index d3e5b74..7683f4e 100644
--- a/packages/scheduling.yaml
+++ b/packages/scheduling.yaml
@@ -587,8 +587,9 @@ script:
           entity_id: input_datetime.tina_morning_meds_notify
         data:
           time: >
+            {% from 'time.jinja' import datetime_from_calendar %}
             {% if is_state('input_boolean.work_today','on') %}
-              {{ (state_attr('input_datetime.tina_workday_start','timestamp') | int - 1800) | timestamp_custom('%H:%M', false) }}
+              {{ datetime_from_calendar('calendar.family_tinawork','start_time','set','subtract',0,0,30) }}
             {% else %}
               {{ states('input_datetime.master_bedroom_wakeup') }}
             {% endif %}