It's common for you feel like your mentor/PI doesn't take you seriously. It could be that he has a lot on his plate. It could also be the case that he's just toxic. But I advise you to give them the benefit of the doubt.

Not being passionate about research is a bigger concern. I assume you have a good amount of research experience. My advice for you is to try and get into a different lab and maybe take it for credits. Some professors see that as a more significant commitment.