Is there a way to complete Pre-migration Setting steps through configuration file?

Hello,
 
I am getting a 404 when trying to access the tool through the admin area.
My host does not allow me permissions to restart nginx, though i did update my nginx.conf in my site root to
server {
    listen 80;
    server_name shop.mysite.com;
    set $MAGE_ROOT /var/www/html/magento2;
    include /chroot/home/afa39934/shop.mysite.com/nginx.conf;
    include /chroot/home/afa39934/shop.mysite.com/pub/ub-tool/nginx.conf;
}
 
then in /pub/ub-tool/nginx.conf i updated one of the lines to
fastcgi_pass   fastcgi_backend
 
Does that look correct? If so do i need to ask my host support to reload nginx?
 
Also is there a way to complete Pre-migration Setting (8) steps through the CLI or by updating some configuration file?