Retrieve Test Case using Test Cycle Data

I am pulling Zephyr data for a particular test cycle. I am able to retrieve the test cycle information and using that I got all the execution data for the test cycle. 

Problem:

I want to show the total number of test cases in the test cycle I am working on, If i retrieve the data from execution endpoint I would only get the data which is executed. But there can be a test case in a test cycle which still needs to be run. If i use the execution end point I can say number of test cases have been executed till now, But can not answer How many test cases are there in this cycle. 

I saw that it is a limitation, Any work arounds for this?