301 redirect all pages to another site

Site URL: https://www.foodshot.com.au/%C2%A0

Hello, 

I need to do a 301 redirect from our old agency's homepage to the new site as we want to keep all of the old site's traffic.

A normal redirect requires the page to be disabled. I can't disable the homepage, without setting another page as the homepage, but all internal pages have 301 redirects and are disabled. Is there a way around this? 

Old site: https://www.foodshot.com.au/ 

New site: https://www.servagency.com.au/