Re-installed Brave on iOS, created new wallet - restore old?

Hello - I was trying to unsuccessfully transfer my BAT wallet to my Mac OS Brave browser - but I couldn’t get the one time transfer thing to load. So I deleted the app and re-installed and now I have a completely new wallet on iOS. How can I recover my old wallet? I had sent the original iOS wallet info to my desktop (it saved it as a .json file) just in case before I did this - is there a way I can open or sync the original wallet on my desktop or restore it on iOS now?