FortiGate local admin console access only

Hello,

I was wondering if it's possible to lock down a local admin account for console access only?

I know that you can do it in the global settings, but I only want to lock down one admin account with no mfa to console access only. I attempted to create an admin account and have it's trusted host as 127.0.0.1/32 but got an error. I would like to do this in the trusted host if possible and avoid using a local in policy. In the back of my mind I am thinking about cloud based FortiGate's that have been orphaned from internet access and can only access them through the cloud native console session. 

FortiGate firmware version 7.2.10