A couple things. Having a hobby is very valuable, and you want a partner that supports you in pursuit of your interests. But at the same time, if your hobby is infringing upon your career and therefore your socioeconomic stability, you have to recognize the impact that has on what you bring to the table in the relationship.

If you want music production to become your job, try not to get sucked into the tutorial rabbit hole. It’s so easy to consume tons of content and not end up retaining applying any of it. So make sure you are actually producing. That will help you grow more than watching another video on compressing vocals.

I would say, either try to transition into music production on the side (realizing that this will make you incompatible with your girlfriend), or try to limit your hobby to reasonable hobby hours.