Learn to enable automatic wordpress update and automatic wordpress plugin, and automatic theme update free of charge. Never ever once again do you have to manually update wordpress.

The automated update plugin is called easy updates manager:
https://wordpress.org/plugins/stops-core-theme-and-plugin-updates/

I extremely recommend you run automated backups of your wordpress of you prepare to update your wordpress automatically. See my wordpress tutorial here on how to backup wordpress automatically: https://youtu.be/Y0NkS_kSXU0