Вызов функции во время time.sleep()

threading.Thread(target=schedule_messages,args=(User, session)).start()

def schedule_messages(User, session):
    while True:
        users = session.query(User).filter(User.set_timings != None).all()
        now = datetime.datetime.now()
        for user in users:
            timings = user.set_timings
            send_time = get_send_time(now, timings)
 
            if user.last_updated is None or now > user.last_updated:
                for st in send_time:
                    if now < st:
                        seconds_until_send = (st - now).total_seconds()
                        print(f"Waiting {seconds_until_send:.2f} seconds until sending message to user {user.user_id}...")
                        time.sleep(seconds_until_send)
                        symbol = user.favourite_cc
                        send_prices(user, symbol)
                        update_user_last_updated(user, now, session)
                        break
                else:
                    # All send times for today have passed, schedule the next send time for tomorrow
                    tomorrow = now + datetime.timedelta(days=1)
                    send_time = get_send_time(tomorrow, timings)
                    for st in send_time:
                        seconds_until_send = (st - now).total_seconds()
                        print(f"Waiting {seconds_until_send:.2f} seconds until sending message to user {user.user_id}...")
                        time.sleep(seconds_until_send)
                        symbol = user.favourite_cc
                        send_prices(user, symbol)
                        update_user_last_updated(user, now, session)
                        break
        time.sleep(60)