Managed to fix with retentions using loki helm 6.30. Below the reference.
runtimeConfig:
overrides:
tenant_1:
retention_stream:
- KEY: VALUE
- KEY: VALUE
tenant_2:
retention_stream:
- KEY: VALUE
https://community.grafana.com/t/loki-retention-overrides-in-helm-not-working/136728/8?u=heshand