Staging Area Setup (UAT)

Hi Guys, I have a requirement of setting up a staging area for test environment.

Basic requirement is

• not have communication between Production and staging area.
• Staging Area to reside on same L3 switch.
• Actual requirement of /24 subnet no more than that. Utilization will not exceed more than 20 IP's

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Current Setup:

• 2 TOR Catalyst 9500 switch (acting as Core Switch) [Interconnected over 2 40G ports in LACP]
• 1 Mgmt Catalyst 9200 switch.

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Query:

• How can I design a staging Area where these requirements get fulfilled.?

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My Planning/Thoughts:

• I am thinking to configure a separate VRF for staging area and keep the production network on global vrf and have separation in this way.

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Any suggestions are welcome, thank you in advance.

Apologies, if this query seems a bit noob. I have taken a role of Lead recently and this part comes along with it.