How to pass at most 5 lines per second to the next step

Hi all.

I have a job with 2 steps which one step passes lines to the next one, and this one is executed one for each entry. The problem is that this process is too fast for the number of available requests per second the second step is allowed to do (there is an API request inside the second step).

What I want is to pass at most 5 lines per second from the first job step to the second (both Transformations).

Could someone help me to figure out how to solve this?

Thanks in advance!