Hi @PrasadGJoshi,
If you are talking about Now Learning instances:
https://nowlearning.servicenow.com/lxp/en/on-demand-training-and-content/lab-instance-extension-requ...
Or if you are mentioning about Developer instances:
By default, instances with no activity for over 10 days will be claimed back into the pool. Then you can request another one by selecting the version.
If you found my answer helpful or correct in any way, please don't forget to mark it to help future readers! 👍
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Kind regards,
Marcos Kassak
Solution Consultant 🎯
