Update main.py

main.py

@@ -79,11 +79,11 @@ def get_topics_within_timeframe(subject, allowed_time, start_subtopic):
             continue
 
         for subtopic in chapter["subtopics"]:
-            # Start collecting immediately if start_subtopic is empty
-            if start_subtopic == "" or subtopic["subtopic"] == start_subtopic:
+            if subtopic["subtopic"] == start_subtopic:
                 start_collecting = True
+                continue
 
-            if start_collecting and subtopic.get("subtopic_hours"):
+            if start_collecting and subtopic["subtopic_hours"]:
                 time_spent += float(subtopic["subtopic_hours"])
                 if time_spent <= allowed_time:
                     collected_subtopics.append({