Redis Enterprise high Connection issue

I am looking to optimize the cost for Redis enterprise. Right now i am using an E100 plan When i look at the monitoring metrics i see a low utilization of CPU, low server load and low % memory usage but i see the connected client parameter the sum for last 30days to be very high approx. 2.13M. as per E100 plan 100K connection are allowed but in my case the sum of connections are way too high. What happens in this scenario?

Is there a way to optimize the connections and downgrade to a lower plan to save cost?