Как поставить скрипт на постоянное повторение через определенное время в минутах?

Я только начал изучать Python из-за необходимости вести рассылку в Telegram. У меня есть такой скрипт, но он заканчивается после отправки. Можете подсказать, что мне изменить, чтобы он повторялся через определенное время не закрываясь? Спасибо большое. Извините, если что не так спрашиваю

from pyrogram import Client
from pyrogram.errors import FloodWait, BadRequest, Flood, InternalServerError
from time import sleep
from sys import stderr, exit
from loguru import logger
from dotenv import dotenv_values
from msvcrt import getch
from os import system



def clear(): return system('cls')


config = dotenv_values()
SESSION_NAME = config['session_name']
API_ID = int(config['api_id'])
API_HASH = config['api_hash']

logger.remove()
logger.add(stderr,
           format='<white>{time:HH:mm:ss}</white> | '
                  '<level>{level: <8}</level> | '
                  '<cyan>{line}</cyan> - '
                  '<white>{message}</white>')

app = Client(SESSION_NAME, API_ID, API_HASH)

with open('otc.txt', 'r', encoding='utf-8') as file:
    otc_list = [row.strip() for row in file]

msg_text = open('msg_text.txt', 'r', encoding='utf-8').read()


def send_message_otc(current_otc):
    for _ in range(3):
        try:
            with app:
                app.send_message(current_otc, msg_text)

        except FloodWait as error:
            logger.info(f'{current_otc} | FloodWait: {error.x}')
            sleep(error.x)

        except Flood:
            pass

        except BadRequest as error:
            logger.error(f'{current_otc} | {error}')

        except InternalServerError as error:
            logger.error(f'{current_otc} | {error}')

        except Exception as error:
            logger.error(f'{current_otc} | {error}')

        else:
            logger.success(f'{current_otc} | The message was successfully sent')
            return

    with open('errors_send_message.txt', 'a', encoding='utf-8') as file:
        file.write(f'{current_otc}\n')


def join_chat_otc(current_otc):
    for _ in range(3):
        try:
            with app:
                app.join_chat(current_otc)

        except FloodWait as error:
            logger.info(f'{current_otc} | FloodWait: {error.x}')
            sleep(error.x)

        except Flood:
            pass

        except BadRequest as error:
            logger.error(f'{current_otc} | {error}')

        except InternalServerError as error:
            logger.error(f'{current_otc} | {error}')

        except Exception as error:
            logger.error(f'{current_otc} | {error}')

        else:
            logger.success(f'{current_otc} | Successfully logged into the chat')
            return

    with open('errors_join_chat.txt', 'a', encoding='utf-8') as file:
        file.write(f'{current_otc}\n')


if __name__ == '__main__':
    user_action = int(input('Enter your action '
                            '(1 - join chats from .txt; '
                            '2 - send message in chats from .txt): '))

    clear()

    for current_otc in otc_list:
        if user_action == 1:
            join_chat_otc(current_otc)

        elif user_action == 2:
            send_message_otc(current_otc)

    logger.success('Работа успешно завершена!')
    print('\nPress Any Key To Exit..')
    getch()
    exit()