Hello MUDASSAR ARSHAD
welcome to this moderated Azure community forum.
Free Azure credits are offered to students at a 12 month basis:
If you exhaust your available credit before 12 months and you want to continue to use Azure, you can upgrade to a pay-as-you-go subscription in the Azure portal.
As seen here, you can renew add the end of the 12 months.
If you change it into pay-as-you-go, the free Azure services apply as seen on this page.
This includes a Free IoT Hub (8,000 messages per day and .5 KB message meter size of Free edition).
As an alternative, you can ask a fellow students to give you access to their subscription as an EntraID guest account with elevated rights/roles to work with resources overthere.
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