Ping low traffic site to fire backup

Hello!

I have a WordPress website which gets 5-10 visitors a day, usually during daytime. I have set up backups to run during the night, so the users don’t get any performance degradation while the backup runs. However, if I understand it right, if I don’t have any visitors during the night time, the first visitor in the morning will cause the backups to run. Is there a way to ping (sorry if it is not the right name for it) the website so it causes the backups to run?

Thank you!