Minecraft Hoglin Farm

I cobbled together the following Hoglin Farm and now I don't know how to get rid of the babies because they don't die… PS: Lava does not flow on the server if it is claimed, but the little ones are still under the lava.

How can I automatically kill the babies without building the farm another 200 blocks up and then making a chute?

Ask a mod if he copies them 200 blocks higher