Should I run multiple reverse proxies for different containers?

I currently run servers via VM in Proxmox.

Two of these VMs are:

1. FreshRSS, RSS-Bridge, and Nginx Proxy Manager
2. Audiobookshelf

Nginx Proxy Manager is currently being used to reverse proxy FreshRSS & RSS-Bridge. Should I use my currently installed NPM from VM 1 to reverse proxy Audiobookshelf on VM 2? Or should I also install NPM in VM 2 to manage that reverse proxy?