Nginx Reverse Proxy Subdomain & Port

I'm trying to get my subdomain to redirect to a different machine I have a wiki on.

So basically I've got one machine with Nginx and another machine with the Wiki. (Being Wiki.js) I'm struggling a little with trying to get this setup honestly. The Nginx server has a different internal IP from the Wiki machine.

I've currently been trying this with little success:

  server {
          listen 80;
          server_name wiki.testsite.co.uk;

          #ssl_certificate           /etc/nginx/cert.crt;
          #ssl_certificate_key       /etc/nginx/cert.key;

          #ssl on;
          #ssl_session_cache  builtin:1000  shared:SSL:10m;
          #ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
          #ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;
          #ssl_prefer_server_ciphers on;

          location / {
                  proxy_set_header        Host $host;
                  proxy_set_header        X-Real-IP $remote_addr;
                  proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
                  proxy_set_header        X-Forwarded-Proto $scheme;

                  proxy_pass      http://192.168.1.184:3000;
                  proxy_read_timeout 90;

                  proxy_redirect http://127.0.0.1 https://192.168.1.184:3000;
          }
  }

This is also inside the available site file for the actual domain the normal website runs on. I've also tried this in a config file for reverse proxies.

As for the cloudflare DNS here you are:

• Type: A
• Name: wiki
• Content: mypublicip
• Proxy status: DNS only
• TTL: Auto

Not sure what I'm doing wrong honestly but it's been fun messing around with this. ~Blood