Update app.py

app.py

@@ -202,7 +202,7 @@ async def count_threads(ctx, time: int):
         for channel in ctx.guild.text_channels:
             for thread in channel.threads:
                 print(thread.name)
-                async for message in thread.history(limit=None):
+                async for message in thread.history(limit=None, after=start_date, before=end_date):
                     thread_message_count += 1