@FSNT
If you are using Basic or Standard cache then you can enable it, in this case, you have to scale up please refer below.
https://learn.microsoft.com/en-us/azure/azure-cache-for-redis/cache-how-to-premium-clustering?source=recommendations#can-i-directly-connect-to-the-individual-shards-of-my-cache
I hope this information helps
Regards
Geetha