Nevermind I think I found what I needed.
Looks like with forward only it doesn't allow recursion anyways.
When a DNS server configured to use forwarders cannot resolve a query locally, or using its forwarders, the server attempts to resolve the query using standard recursion. A DNS server can also be configured to not perform recursion after forwarders fail. In this configuration, the server does not attempt any further recursive queries to resolve the name. Instead, if it does not get a successful query response from any of the servers configured as forwarders, then it fails the query. A DNS server configured in this manner is called a forward-only DNS server. If all forwarders for a name in the query do not respond to a forward-only DNS server, that DNS server will not attempt recursion."