Will Time Machine continue backing up if I put zero light into display and switch off going to sleep?

Hi somanyquestions7,

Thanks for using Apple Support Communities! I see you have a question about backing up your MacBook Air using Time Machine, and I'd like to help.

Looking at the Time Machine articles, you should be alright as long as your Mac doesn't go to sleep or shut off. Make sure you plug in your Mac to power, and change the settings in the Power Adapter tab, not the Battery tab. Adjust settings in Energy Saver

Back up your Mac with Time Machine

If a Time Machine backup takes longer than you expect

However, the great thing about Time Machine, is that you can be using your Mac and it will still back up in the background. Just set it to start the backup when you start your day.

Here's some info on upgrading to macOS Catalina: How to upgrade to macOS Catalina

Take care!

Hey somanyquestions7,

Thanks for letting us know! That's great news!

Cheers!