Access IP camera at specific times in my network

Hello

I plan to have an IP continuously streaming at a specific URL inside my network (RTMP). I want to access that camera from the internet only at certain times. What I was planning to do is:

• The switch redirects a specific port to the RTMP stream,
• so accessing my OFFICE_IP:PORT shows the RTMP stream
• when I don't want the stream to be seen, I close that port in the switch from an app that I would make (it would be a managed switch with a REST API)

Does this make sense? Am I overcomplicating things?

Thanks