如何检查X分钟内是否未发送消息？(discord.py)

import discord
from discord.ext import tasks
from discord.utils import utcnow

client = discord.Client()

@tasks.loop(minutes=X)
async def check_inactive():
    last_message_time = None
    for channel in client.get_all_channels():
        if isinstance(channel, discord.TextChannel):
            async for message in channel.history(limit=1):
                last_message_time = message.created_at
                break
    if last_message_time is not None and utcnow() - last_message_time > timedelta(minutes=X):
        print(f"No messages sent in the last {X} minutes.")

@client.event
async def on_ready():
    print(f"We have logged in as {client.user}")

check_inactive.start()
client.run('YOUR_BOT_TOKEN')