I read your requirement in care. It is no problem for me.
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I can surely help you out to add new functions in your existing project,
as per your needs and with 100% exact and quality result. With over 3 years,
I have 4+ years of experience with java, spring, hibernate, spring boot, JPA, JDBC, servlet, JSP, MySQL, Oracle, restful web services, Microservices, PostgreSQL, angular-6, HTML, CSS, java script, bootstrap. I am workLisää
You can only have one process listen to one port, not just in Node.js, but generally (with exceptions that don't apply here).
You can achieve what you need to one of two ways:
1. Combine the node apps