apache kafka – Azure event hub – limit for number of topics

I’m encountering a limit on Azure event-hub which does not allow to create more then 10 topics (aka event-hubs in Azure) per kafka instance (aka event-hub namespace in Azure).
Is there any way or solution for avoiding this limit ?
Of course I could choose an higher tier of the Azure service, but it costs 40 times the current tier so I would first evaluate other options.

In case there is no way to cross this limit and the cheaper solution is to create another namespace, what would be the solution for a spring-boot microservice to connect to both the event-hubs?